“Published in 1985, her memoir, Deceived With Kindness: A Bloomsbury Childhood, describes the luminous orbit around Ms. Garnett’s mother, the painter Vanessa Bell, a sister of Virginia Woolf. It was a self-reflexive, self-congratulatory milieu in which art was all, sex was the coin of the realm and the only real transgression was the unpardonable sin of being ordinary.”