(A) If a child is found to be a proper subject for voluntary admission, the director of a treatment program or facility shall admit for treatment an individual who is:
(1) sixteen years of age or older and who applies for admission;
(2) under sixteen years of age if his parent or legal guardian applies for admission on his behalf.
(B) A governmental agency, acting as legal guardian, admitting a child voluntarily, shall notify the child's guardian ad litem within forty-eight hours. If a guardian ad litem has not been appointed, the agency shall petition the court for appointment within seventy-two hours.