Gideon walked slowly down the Alley, still looking for sign of the Wizard he'd been following, but not holding out much hope of finding any. He'd nearly had him, but that damn cat had spooked and the bloke had looked up, then Apparated away.
He cast tracking charms without result, and was ready to give up the search when he spotted it. A bundle of clothing dumped against the wall in the gloom. Nothing to notice, really, except for the pale hand among the folds.
Gideon approached carefully, wand in hand, then knelt, moving a fold of cloak off the face of the girl underneath. Blood smeared her cheeks and lips, and he cleaned it off with a charm.
"Hey." She was semi-aware, it seemed, and shivering. Gideon pulled off his cloak and draped it over her huddled shape. "Let me help you. Tell me your name..."