The Girl in Hemingway's Studio by Carolyn Grady

A family drama involving a successful father, his demanding, wealthy, and self absorbed wife and his two daughters. Alexis, his youngest daughter is a successful professor who writing her first novel while her sister, Charlotte, is preoccupied with her own interests and causing chaos after her failed marriages. After Alexis wins a Florida contest that allows her to complete her novel in the Ernest Hemingway house, her father requests that she allow her sister to accompany her to Key West. This decision results in unexpected and terrifying events.