
In 1956, she guest-starred as Dora Hand in three episodes of The Life and Legend of Wyatt Earp. She is perhaps best known for her role as Lois Judby Hammond in the 1955 film Blackboard Jungle, which starred Glenn Ford. Hayes was often billed as Maggie Hayes in her film credits. Having little success there, she signed with Paramount Pictures. Hayes' initial contract was with Warner Bros. Eventually, she changed to Margaret Hayes for public purposes, and was called Maggie by her friends. Publicists at her studio recommended "Dana Edwards" as a better name for movies, so she began using it.

Her screen test for the role of Scarlett O'Hara in Gone with the Wind was unsuccessful, but she received a movie contract, anyway. Using the name "Dana Dale", Hayes found work as a model, "featured in the best cigarette, auto, and fashion advertisements". At the school, she joined "The Barnstormers", a theatrical organization, becoming the first female member of that group. She entered Johns Hopkins University to become a nurse, but stuck to her dramatic ambitions. While a student at Forest Park High School, she joined the Emerson Cook Stock Company to gain more acting experience. Her father was Jack Lewis Ottenheimer, a "musician, theatrical man, and joke-book writer." (Some sources say that he was a real estate broker.

Hayes was born in Baltimore, Maryland (some sources say Pottsville, Pennsylvania) into a Jewish family. Margaret Hayes (born Florette Regina Ottenheimer Decem – January 26, 1977) was an American film, stage, and television actress.
