Rio Hogarty's story of her life in fostering, A Heart So Big, combines the heart-warming nostalgia of Mollie Moran's Aprons and Silver Spoons with heart-breaking stories of children whose lives were blighted by being unloved and uncared for in the style of Cathy Glass. Nearly 70 years ago, Rio started to do her bit for vulnerable children, one child at a time. While she was still in school, she thought nothing of bringing home a schoolmate...