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336 A.3d 439
Vt.
2025
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Background

  • Stacey Vaillancourt, an experienced daycare provider, was convicted of involuntary manslaughter and cruelty to a child with death resulting after a six-month-old infant, H.B., died in her care.
  • H.B. died from acute diphenhydramine (Benadryl) intoxication, with levels in her system many times higher than a therapeutic dose; the drug was not prescribed or administered by her parents or other caregivers.
  • Evidence showed that Vaillancourt was the only person who could have administered the drug in the relevant timeframe, and as someone with childcare experience, she would have known the risks.
  • The trial court denied Vaillancourt’s motion for acquittal, finding sufficient evidence to go to the jury; the jury convicted her on both counts.
  • On appeal, Vaillancourt challenged the sufficiency of the evidence, argued the verdicts were inconsistent and violated double jeopardy, and contested admission of certain video evidence.
  • The Vermont Supreme Court reviewed the legal standards for sufficiency of the evidence, inconsistent verdicts, double jeopardy, and evidentiary discretion, ultimately affirming her convictions.

Issues

Issue Plaintiff's Argument Defendant's Argument Held
Sufficiency of Evidence (both counts) Evidence showed criminal negligence and intent No direct proof of how diphenhydramine was administered; no proof of knowledge or intent Sufficient evidence for both convictions
Inconsistent Verdicts Counts are independent and not mutually exclusive Mental states of charges are mutually exclusive Verdicts are not inconsistent
Double Jeopardy Legislature intended to allow multiple charges Same conduct punished twice No double jeopardy violation
Admission of Video Evidence Videos were relevant to show causation Videos were unduly prejudicial No abuse of discretion; admissible

Key Cases Cited

  • State v. Viens, 186 Vt. 138 (proof required for involuntary manslaughter and criminal negligence)
  • State v. Amsden, 194 Vt. 128 (willful exposure to risk under child cruelty statute)
  • State v. Robitille, 210 Vt. 202 (sufficiency of evidence for involuntary manslaughter; circumstantial evidence)
  • State v. Crepeault, 167 Vt. 209 (principle for inconsistent verdicts when one count is predicated on another)
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Case Details

Case Name: State v. Stacey Lynn Vaillancourt
Court Name: Supreme Court of Vermont
Date Published: May 2, 2025
Citations: 336 A.3d 439; 2025 VT 20; 24-AP-094
Docket Number: 24-AP-094
Court Abbreviation: Vt.
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