The Trouper (1922)

Working as a wardrobe girl in a cheap traveling stock company, Mamie Judd secretly loves Jenks, the leading man, who scarcely notices her. She saves Neal Selden, son of a small-town banker, from being accused of robbery and murder, acts committed by the company's manager and leading lady. In the end, although Jenks comes to realize his love for her, she becomes engaged to Selden.