She kept walking backwards, moving away from him even when he'd lowered the wand to his side. There was no guarantee that he wasn't going to attempt to grab her again.

Her eyes were locked on his, and she kept her hands up, ready to attempt to use some of the self-defense training that she'd had now that he was clearly aware that the contact between them wasn't something that she was wanting or inviting.

"I'm sorry, I don't know if you've regenerated or something, but right now you're worrying me." Her voice was calm, very much her doctor tone. "I honestly don't have any idea who you are."