Creator of mass-market young adult series Sweet Valley and Fearless. Author of several other children's novels, some of which became ABC Afterschool Specials, as well as a few adult novels. With husband John Pascal and brother Michael Stewart, wrote book for Broadway musical "George M!" Worked with John Pascal as screenwriter for ABC soap "The Young Marrieds," and author of novel "The Strange Case of Patty Hearst." Had three daughters, Jamie, Laurie, and Susan, from first marriage. Oldest daughter Jamie died in 2008 of liver disease. Never remarried after John Pascal died of cancer in 1981. Divides her time between homes in New York and the south of France.