‘Now, just stay in the bag until I say so, OK? This could go one of two ways.’ Cat pushed the furry head back into her cavernous turquoise handbag and hoisted it up on her shoulder, pushing a strand of her pixie-cut chestnut hair out of her eyes. The sun was hesitant, the early March day too cold to be called balmy, but it was trying hard, and the thought that they were at last leaving winter behind gave Cat a spring in her step. She approached the main doors of Fairview Nursery, nodding and smiling at the clutches of parents, some with older children on their way to primary school, most with pushchairs, hoping that none of them would notice her bag’s unusual bulge.