(a) The court may appoint an attorney ad litem to represent the ward's interest in the final settlement with the guardian if:
(1) the ward is deceased and there is no executor or administrator of the ward's estate;
(2) the ward is a nonresident; or
(3) the ward's residence is unknown.
(b) The court shall allow the attorney ad litem appointed under this section reasonable compensation out of the ward's estate for any services provided by the attorney.