Mo. Rev. Stat. § 600.044: Legal services to be furnished by defender, dismissal from case, when, procedure.

A defender who undertakes to represent an eligible person shall continue to do so at every stage of the case or proceeding, including the filing of a motion for new trial and the processing, briefing, and argument of an appeal, until the defender is relieved of his duties by the director or is permitted by a court to withdraw.