The Doctor/ Sirius Black
"Wha?" She looked up to find the young man staring at her and confused for a second before smiling and holding up her sonic. "Oh, this? S'my sonic! Just tryin' to figure out what happened here- well, not here, here. The city. Dunno why it's all abandoned- could be nothin'. Could be the undead. Who knows?" She was joking. Sort of.
"Convenient for us, s'long as nothing attacks and there's no radiation, right?" She smiled and drank from her cup. Course, there was radiation- just trace amounts. It'd be fine. Probably be fine. "Good job on the game, by the way- you used magic- or whatever magic is, right?"
She'd suspected, at least. Not that she'd fully understood it yet. She would in time. "You haven't seen the bobby-headed cat, have you?" Her smile had faded some when she asked that.