(a) The county attorney of Montgomery County, or the county attorney's assistants, shall represent the state, Montgomery County, and the officials of the county in all civil matters pending before a court of Montgomery County or any other court.
(b) The county attorney has the powers, duties, and privileges in Montgomery County relating to:
(1) civil commitment matters under Subtitle C, Title 7, Health and Safety Code;
(2) juvenile matters, including proceedings under Title 3, Family Code;
(3) child protective services; and
(4) protective orders under Title 4, Family Code.
(c) Notwithstanding Subsection (a), the commissioners court in Montgomery County may retain independent counsel in any civil matter.