A surrender may not be withdrawn unless the court is notified in writing prior to the issuance of the final decree of adoption. An evidentiary hearing on the request to surrender shall be conducted, but the rules of evidence shall not apply and the Court shall have discretion to determine who shall be permitted at the hearing. The Court may allow the withdrawal of the surrender only if it finds fraud or duress and that the withdrawal is in the best interests of the adoptee. If a withdrawal of one parent is authorized, the other parent shall be notified and given an opportunity to request, within thirty (30) days, that this parent’s surrender also be withdrawn.