OPINION
We consider here whether documents memorializing a settlement of a dispute between a lender and a guarantor over a mortgage-loan default should have been admitted into evidence during a jury trial on the lender’s damage claim against its lawyers for alleged legal malpractice in connection with the making of the loan. The defendants, Richard Mittleman (Mit-tleman) and the law firm of Cameron & Mittleman (collectively, defendants or the lawyers), appeal from a damages judgment after a jury found them hable to their client, lender Richmond Square Capital Corporation (Richmond Square), for legal malpractice. On appeal, the lawyers contend that Richmond Square failed to prove its actual damages and that the trial justice erred in excluding evidence concerning a settlement between Richmond Square and a guarantor of the loan that, if admitted, allegedly would have reduced or negated Richmond Square’s damages arising from the lawyers’ legal malpractice. This Court directed the parties to show cause why the issues raised should not be summarily decided. After reviewing the parties’ written submissions and considering their oral arguments, we conclude that they have not shown such cause. Thus, we proceed to decide this appeal at this time.
As we noted in a previous opinion addressing a statute-of-limitations issue in this case, “[t]he plaintiff retained defendants to represent its interest in connection with a loan to be made to Parking Corporation of America, and to be secured by mortgages on several pieces of real estate, including the Shepard Building located in downtown Providence.”
Richmond Square Capital Corporation v. Mittleman,
*884
“On June 28, 1990, the loan closing took place and all of the necessary loan-mortgage documents were executed, and later recorded.”
Richmond Square,
In 1991 and 1992 Mittleman continued to represent Richmond Square in legal matters. In February 1991, Richmond Square instituted a foreclosure on the Shepard building property. A Richmond Square subsidiary, Westminster Parking, bought the property for $200,000. Approximately a week after the foreclosure, Richmond Square entered into a settlement with Golden concerning Golden’s loan guaranty. In exchange for Richmond Square releasing Golden from his guaranty, Golden agreed not to contest the foreclosure on the Shepard budding property, paid Richmond Square $40,000, gave it a deed in lieu of foreclosure for property on Bassett Street, and granted it a right to participate (with other lenders) in a promissory note of $600,000.
On December 17, 1993, Richmond Square filed this legal malpractice action. Richmond Square alleged in the complaint that Mittleman and his law firm had committed legal malpractice by not informing Richmond Square about the outstanding taxes owed on the Shepard building property and by assuring Richmond Square that it had an unencumbered first-mortgage position on the property. Subsequently, the lawyers filed a motion for summary judgment on statute-of-limitations grounds. A motion justice granted this motion. In
Richmond Square,
this Court reversed, holding that a genuine issue of material fact existed about whether Richmond Square had discovered that the Shepard building property had a valid tax lien on December 17, 1990, or after that date.
Richmond Square,
At trial Mittleman disputed Schein’s contention that Mittleman failed to disclose the unpaid taxes before the closing. Mittleman testified that a few hours before the closing of June 28, 1990, he informed both Schein and Schein’s advisor, Arnold Kilberg, that there was not enough money in the loan to cover the unpaid taxes on the Shepard building property. According to Mittleman, both Schein and Kilberg *885 stated that Richmond Square should go forward with the closing anyway, because Golden possessed sufficient assets and collateral to cover any default. Many other ■witnesses also testified at trial, but it appears that the central issue for the jury to resolve was the conflicting testimony of Schein and Mittleman concerning whether Schein knew about the unpaid back taxes. The jury apparently credited Schein’s testimony because it returned a verdict in Richmond Square’s favor for $127,182.16. 1 In its answer to specific interrogatories, the jury found that Richmond Square had not discovered the tax liability for the previous owners until December 17, 1990, at the earliest. The lawyers renewed their motion for judgment as a matter of law and filed a motion for a new trial. The trial justice denied the motions and defendants appealed.
The key issue on appeal concerns the effect of the post-foreclosure settlement agreement between Richmond Square and Golden on the jury’s damage award. During the cross-examination of Schein at trial, the lawyers’ trial counsel sought to question Schein about the settlement agreement that Richmond Square had executed, thereby releasing Golden from his obligations under the loan guaranty. During cross-examination it became evident that Richmond Square had received several properties, plus $40,000 from Golden, in the settlement. Schein admitted that the purpose of the settlement was for Golden “[t]o pay as much of the debt as it might cover.” However, at one point, the trial justice cautioned the lawyers’ counsel that he should not recite anything from the settlement agreement itself. Later on, the trial justice refused to allow the lawyers’ counsel to question Schein in detail about the settlement agreement and mutual releases. Counsel attempted to admit the settlement documents as full exhibits but the trial justice refused to admit them, ruling that they were irrelevant because they did not relate to the question of whether Mittleman’s alleged negligence in not informing Richmond Square about past due taxes on the Shepard building caused it to incur an obligation to pay taxes.
On appeal, the lawyers argue that Richmond Square failed to prove it was damaged by Mittleman’s alleged negligence. Therefore, the lawyers contend, the trial justice erred in denying their motion for judgment as a matter of law. They insist that Richmond Square was required to establish actual damages so it could recover against them on its legal malpractice action. They assert that Richmond Square’s failure to offer into evidence any valuation of the settlement with Golden was fatal to its case because the value of the settlement could have given it a net gain or, at very least, reduced the damages it claimed to have suffered because of their negligence. Also, the lawyers contend, the trial justice erred in excluding the settlement documents and releases pertaining to Richmond Square’s settlement with Golden. These documents, they argue, would have helped the jury analyze the value of the consideration given by Golden to determine whether the value was equal to or in excess of all Golden’s original obligations under the loan, including the taxes. Because the jury was not allowed to review and consider the settlement documents and corporate tax returns, it was not in a position, the lawyers aver, to determine whether the settlement resulted in Richmond Square’s suffering no damages because of the unpaid back taxes. *886 The lawyers further submit that Richmond Square failed to mitigate its damages.
Finally, the lawyers contend that Richmond Square had a right to receive the amount of the tax payments from Golden pursuant to G.L.1956 § 34-11-22 (providing for recovery of unpaid taxes, among other items, as part of mortgagee’s statutory power of sale). They posit that if the trial justice had allowed them to introduce the settlement documents and corporate tax returns into evidence, they would have demonstrated that Richmond Square, in fact, was reimbursed for its payment of the taxes through its settlement with Golden and that, notwithstanding the back-taxes payment and the expenses of foreclosure, Richmond Square still profited from the Golden settlement.
In response Richmond Square argues that the trial justice did not abuse his discretion in finding the settlement documents irrelevant because they do not specifically advert to the value of the properties and the other consideration that Golden provided to Richmond Square in the settlement. Therefore, Richmond Square argues, the documents by themselves were speculative and did not have probative value. It also argues that it incurred an unexpected front-end cost in having to pay the real-estate taxes to maintain its security over the property. It maintains that these taxes represented an additional cost to it, regardless of the outcome of the foreclosure on the mortgaged property. Richmond Square reiterates that most of the documents the defendants sought to admit did not have concrete numbers and the later sale of the Shepard Building was too far removed from the loan transaction to be relevant. It further argues that defendants have waived any challenge to the admission of the corporate tax returns— having failed to mark them for identification — or to the issue of liability.
We hold that the lawyers properly raised these issues before the trial justice. Also, they have challenged liability insofar as they argue that Richmond Square failed to prove actual damages. “A civil malpractice claim is, in essence, a negligence claim. In order to prevail on a negligence-based legal malpractice claim, a plaintiff must prove by a fair preponderance of the evidence not only a defendant’s duty of care, but also a breach thereof and the damages actually or proximately resulting therefrom to the plaintiff.”
Macera Brothers of Cranston, Inc. v. Gelfuso & Lachut, Inc.,
Richmond Square submitted competent evidence that it suffered damages because of defendants’ failure to notify Richmond Square about the unpaid-tax encumbrances on the Shepard building property. In considering defendants’ motion for judgment as a matter of law, the trial justice was required to view the evidence in the light most favorable to Richmond Square and deny the motion if reasonable persons could draw different conclusions from the evidence.
See Kurczy v. St. Joseph Veterans Association, Inc.,
With respect to the lawyers’ assertion that Richmond Square failed to mitigate damages, defendants bore “the burden of proving that the plaintiff failed to adequately mitigate his or her damages.”
Bibby’s Refrigeration, Heating & Air Conditioning, Inc. v. Salisbury,
“It is well settled that [this court] shall not disturb a trial justice’s admission or exclusion of evidence on relevancy grounds absent a showing by the aggrieved party that the trial justice abused his or her discretion.”
Caranci v. Howard,
Finally, even if the lawyers had appraisals or other evidence concerning the properties’ value (and the record contains no indication that they did), this evidence should not have been admitted to show that Golden had reimbursed Richmond Square for the tax payments because of the collateral source doctrine. This doctrine
“mandates that evidence of payments made to an injured party from sources independent of a tort-feasor are inadmissible and shall not diminish the tort-feasor’s liability to the plaintiff. * * * ‘The rationale of this rule is *888 that the injured person is entitled to be made whole, since it is no concern of the tort-feasor that someone else completely unconnected with the tort-feasor has aided his victim * * *,’ and the ‘wrongdoer, responsible for injuring the plaintiff, should not receive [this] windfall.’” Gelsomino v. Mentioned,723 A.2d 300 , 301 (R.I.1999) (quoting Oddo v. Cardi,100 R.I. 578 , 584-85,218 A.2d 373 , 377 (1966)).
In any event, the documents in question did not contain any indication of the value of the properties provided in the settlement. Even if the lawyers had made an offer of proof indicating that the total value of the settlement exceeded the unpaid loan amount and covered (or at least reduced) the back taxes Richmond Square had paid — and they failed to do so — such evidence would not have served to reduce Richmond Square’s damages for the unpaid taxes.
The lawyers cite
Katzenberger v. Bryan,
These same considerations apply to the corporate tax documents. Further, by failing to request that these documents be marked for identification, the defendants have waived any ability to challenge the trial justice’s failure to admit them into evidence because we have no basis to assess their probative value. The lawyers also refer this Court generally to other issues contained in their post-trial motions. But issues which have not been fully developed in argument to this Court are not subject to our review.
See State v. Charette,
Conclusion
The trial justice did not abuse his discretion in precluding the admission of settlement documents and corporate tax returns during the jury trial, and in refusing to offset or reduce the damages that the plaintiff proved during the jury trial. For the above reasons, we deny the defendants’ appeal and affirm the judgment in favor of the plaintiff.
Notes
. This includes the $79,493.34 amount for the 1989 tax bill and half of the 1990 tax bill ($95,377.65).
