She appeared mainly in comedies usually with her name billed above the title, often portraying spirited society girls, and also received good reviews for her forays into dramatic roles.

On radio, Ralston portrayed Kathy Marsh in Portia Faces Life[1] and Marcella Hudnall in Our Gal Sunday.

Her last leading role was in To the Last Man in 1933, directed by Henry Hathaway and starring Randolph Scott with a supporting cast featuring Noah Beery Sr., Buster Crabbe, Shirley Temple and John Carradine.

[6] In the book, she mentions that her career was sabotaged by Louis B. Mayer when she refused to sleep with him at the beginning of a swiftly abortive contract at his studio.

She was graylisted and soon found herself toppled from the height of the industry to being predominantly relegated to supporting roles, mainly at minor studios, solving the mystery of why her career faltered at the dawn of sound despite her having had a lifetime of theatrical stage experience and a superb speaking voice.