She starred in several films including The Girl Most Likely, A House Is Not a Home, What Way to the Front?, The Ritz, Freaky Friday, Falling in Love Again, Modern Love, Eternity, Baby Geniuses, and more. Ballard also appeared in episodes of TV series including The Patty Duke Show, Rowan & Martin’s Laugh-In, All My Children, Love, American Style, The Love Boat, Fantasy Island, Daddy Dearest, and more. She has also starred in several stage productions including The Pirates of Penzance, Pippin, Funny Girl, Chicago, No, No, Nannette, and more.