It’s 1988, and Sunday, a woman with autism, is living in a close-knit but sometimes unfeeling part of the Lake District.   Having inherited her parents’ house, she has crafted an independent life, and is bringing up her headstrong teenage daughter, Dolly, who yearns for independence from the family nest.  Into this world come the glamorous, unpredictable Vita and her husband Rollo, a couple who eschew domesticity for extravagant suppers involving champagne and antipasti from Harrod’s. They arrive in Sunday and Dolly’s town for the summer, and take the house next door, whereupon Vita, with the blithe confidence of her class, starts to inveigle herself into her neighbours’ lives. Viktoria Lloyd-Barlow’s wonderful debut novel, All the Little Bird-Hearts, longlisted for the Booker Prize , is sharply evocative of both motherhood and how British society treats people with disabilities.…