“A muse is always a woman and a lover.” This vivid adaptation of May Sarton’s 1965 landmark novel tells the story of writer Hilary Stevens, who shocked the world in the 1920s with her novel about a love affair between two women. In the 1960s, the aging writer is interviewed by two young reporters who want to know, “Who’s the muse?” Through lushly filmed flashbacks, Hilary rec...