There is the dutiful daughter cheerfully reporting on her successes to “mommy” in Letters Home, the suicidal Esther, heroine of her autobiographical novel The Bell Jar; the loving mother of poems such as Morning Song (“Love set you going like a fat gold watch…”), the selfish mother of Edge (“each dead child coiled, a white serpent…”). Add to these the conflicting biographical portraits in which she variously appears as a monster, a victim, a feminist heroine, a brilliant poet, a not-quite-good-enough poet, a strong woman who killed herself, a weak woman who killed herself, and now, in a biographical prequel to the main event of her life, Andrew Wilson has given us a portrait of Sylvia before she met her “colossus”, Ted Hughes.