Upon the motion of any party or upon the court’s own motion, the court may appoint a guardian ad litem for the adoptee or for any person found to be incompetent or a child who is a party to the proceeding. In any contested proceeding, the court shall appoint a guardian ad litem for the adoptee. The court may appoint the child’s attorney appointed pursuant to the Abuse and Neglect Act if the child is fourteen years of age or older and in the custody of the department.