[ Hearing her name has the desired effect - namely that his muscles begin to lose some of that tension and some of his guard falls if only just. There's no way for him to tell if she's really telling the truth, but deriving "Max" from "Maximoff" is enough for him to give her the benefit of the doubt. ]

You have to work with what you have. [ It's a small nod to her creativity and thinking on her feet. His expression shifts into something a little less wary and more relaxed. ] I never would have guessed 'Maximoff' from 'Max'.

[ Water drips from his hair and returns to dutifully trying to dry as much as he can. Just because he broke his way in doesn't mean he's lost his manners. ]

How long have you been here? This feels like it would take a lot of time to build.