Her first film role was in "Camille" (1936), a romantic drama starring Greta Garbo and Robert Taylor. She played Taylor's younger sister Marie Jeanette, but her speaking scenes were deleted and she was uncredited. MGM had trouble finding suitable roles for her, and she was let go by the studio along with Deanna Durbin. Leslie returned to New York, working on the radio and as a model. During this time, her older sister Mary was signed to Universal Studios. Leslie returned to Hollywood with the rest of her family, working for different studios as a freelancer. She mainly worked for RKO Pictures.