1. A placing parent of a child may not bring an action to set aside an adoption after a petition for adoption has been granted, unless a court of competent jurisdiction has previously, in a separate action:
(a) Set aside the specific consent to adoption;
(b) Set aside the relinquishment of the child for adoption; or
(c) Reversed an order terminating the parental rights of the placing parent.
2. After a petition for adoption has been granted, there is a presumption for the purposes of this chapter that remaining in the home of the adoptive parents is in the best interest of the child.