Around 1940 she chose the name "Carroll" because she said it sounded musical.
Up until 1940 she was the only child star to be summoned from Hollywood in order to appear in the leading role of a Broadway musical.
When she wasn't acting, she was either ice-skating or playing the piano. She once captured fifth prize in a West Coast (USA) ice-skating competition in 1939 and played the piano in the footsteps of her mother, who appeared in concerts and on radio in her time.