Ivy had worked with Robert Zemeckis and Bob Gale in the 1978 film I Wanna Hold Your Hand, which also featured BTTF actors Wendie Jo Sperber and Marc McClure. She is also the mother of recently deceased veteran New York City born actress Zina Bethune (born February 17, 1945), who died on February 12, 2012 in Los Angeles. Ivy was formerly married to William Charles Bethune (Zina's father) from 1939 until his death in 1950. In 1971, she wed veteran actor Stuart Lancaster; they remained married until his death in 2000. Ivy, whose career has spanned over sixty years, began with a regular role on radio's Superman.