British novelist and biographer whose books are known for their detailed characterizations.

Forster studied at Somerville College, Oxford (B.A., 1960). Her novels generally feature ordinary heroines struggling with issues of love and family. Beginning with Dames' Delight (1964) and Georgy Girl (1965; filmed 1970), she published novels with regularity. Mother Can You Hear Me? (1979) and Have the Men Had Enough? (1989) are both about a family's efforts to care for an elder member. The Bride of Lowther Fell (1980) and Lady's Maid (1990) are set in the Victorian era.

Among Forster's other novels are The Travels of Maudie Tipstaff (1967), Mr. Bone's Retreat (1971), Marital Rites (1981), and The Battle for Christabel (1991). Significant Sisters: The Grassroots of Active Feminism 1839–1939 (1984) profiles a number of famous women. Forster also wrote biographies of several writers, such as Daphne du Maurier: The Secret Life of the Renowned Storyteller (1993). Other works by Forster include Mother's Boys (1994), Hidden Lives: A Family Memoir (1995), and Shadow Baby (1996).