One scarcely recognizes Drabble's (The Witch of Exmoor, etc.) customary satirical verve in this thinly veiled fictional account of her mother's life. According to the author's afterword, it was painful to write; moreover, it's painful to read. The essential unlovability of the central character is accentuated by Drabble's tone throughout, which she admits is "harsh, dismissive, censorious. As she was." The fictional Bessie Bawtry is born in a Yorkshire coal-mining town during the early years of the 20th century. From childhood on, she is precociously intelligent and fastidious, carping and contemptuous. A manipulative martyr, Bessie is determined to escape her dowdy family and dismal surroundings, but though she wins a scholarship to Cambridge, her ignominious return to her hometown after graduation can be lived down only by marriage to affable Joe Barron. Forever dissatisfied, Bessie thereafter uses her caustic tongue to inflict her bitterness and resentment on her husband and children. Drabble animates the narrative somewhat through Bessie's daughter, Crissie, who manages to surmount her own dreadful marriage, and Bessie's granddaughter, journalist Faro Gaulden. Readers accustomed to Drabble's trenchant commentary on social conditions will welcome her interpolations on anthropological theories, gene research and social migration, all of which add depth to the story. At least one scene, of a funeral attended by the deceased's two wives, five mistresses and many offspring, legitimate and otherwise, represents Drabble at her best. But an author must have some sympathy for her protagonist, and Drabble seems to have none for Bessie. Her statement, again in the afterword: "I feel, in writing this, that I have made myself smell of dead rat"—says it all. 3-city author tour.(Apr.)