Ginny had Percy's green shopping notebook in one hand, a sackful of groceries in the other. He hadn't actually needed too terribly much, but she lit on the idea of making curry for dinner as a wordless sort of 'thank you'. Those sorts of things were always said best with food.
A person crashed, quite literally, into the side of the tomato stand. Ginny started, nearly dropped her grocery sack, and was about to offer a hand up, when she caught a good look at the man.
Vacant eyes.
Tattered, prison-issue pyjamas.
Oh, bloody hell.
She set the sack aside, hoping the food wouldn't get kicked over in whatever ensuing fracas was sure to happen, and drew her wand.