S.C. Code Ann. § 19-1-180
(B) An out-of-court statement may be admitted as provided in subsection (A) if:
(2)
(a) the child is found by the court to be unavailable to testify on any of these grounds:
(D) In determining whether a statement possesses particularized guarantees of trustworthiness under subsection (B)(2)(b), the court may consider, but is not limited to, the following factors: