She frowned, staring at him. She'd never called it a TARDIS. And he'd spoken to the ship, hadn't he? Like he knew what he was doing.

Could he have been a Doctor before the one she knew? She'd never asked just how many times he'd changed...and there was Sarah Jane. She hadn't been his first companion, so perhaps that hadn't been his first face, either.

She didn't have long to say anything about it, though. His speech quickly shifted to a question, and she blinked, mentally catching back up. "Oi! I haven't done anything to her! If something's changed, you did it."