(1) If the adoptive parents are related by blood or by marriage to the child in the second or third degree, only the relationship of the child and of the child’s descendants to the parents of the child and the rights and duties arising therefrom are extinguished.
(2) Where a spouse adopts the child of their spouse, the relationship is not extinguished in relation to the relatives of the other parent, if the other parent had the parental custody and has died.