A good friend of actress Thelma Todd, she was at a dinner given in Todd's
honor the night of Todd's mysterious death from carbon monoxide
poisoning. Margaret was so distraught that she had to bow out of a
picture she was filming Murder by an Aristocrat (1936). Marguerite Churchill was given her
assignment.
She has appeared in two films that have been selected for the National Film Registry by the Library of Congress as being "culturally, historically or aesthetically" significant: Baby Face (1933) and Jezebel (1938).
Frequently cast in movies starring James Cagney during the 1930's.