(a) In this section, "case record" means those files, reports, records, communications, audio recordings, video recordings, or working papers under the custody and control of the department that are collected, developed, or used:
(1) in a child abuse or neglect investigation; or
(2) in providing services as a result of an investigation, including substitute care services for a child.
(b) The executive commissioner by rule shall establish guidelines that prioritize requests to release case records, including those made by an adult previously in the department's managing conservatorship.
(c) The department is not required to release a copy of the case record except as provided by law and department rule.