(a) General rule.--Actions or proceedings provided by this chapter are in addition to and not in substitution of actions or proceedings provided by unsuspended statutes where there is desertion or a failure to perform a duty to support.
(b) Persons in institutions and foster homes.--Matters relating to the support of persons living in public or private institutions or receiving foster home care and who are otherwise entitled to support under this chapter shall be determined by the court under the statutes pertaining to those institutions or foster homes.