It was a woman I'd never met who finally swung it. As I lay on a plump mattress under a duck down duvet one night in late April, I thought about what she, Liz, had done with her day. While I'd been sitting on my backside, shuffling words around and working my way through a variety of nut-based snacks, she'd been putting out fires, breaking up knife fights and comforting dozens of bewildered children who know her as a second mum.