"Oh, no," Hermione said, quickly and rather anxiously. "I really couldn't. Really. I'll find somewhere, don't worry." For one thing, Martha probably lived with Snape (though she still found herself having trouble actually believing that theory, regardless of the things that pointed to it) and for another, she felt uncomfortable accepting the kindness of strangeness. Sebastian had offered her a place, anyway- and they knew each other.

Sort of.

Deflecting the conversation, she added; "Xenobiology- as in the biology of other planets? Or possible biology, I suppose, unless- well, you'd know better than I would. Isn't that rather a step from practising medicine?"

That aside, was she a Muggle? She probably wasn't from the same world as she was, Hermione reminded herself; after all, wizards didn't have doctors, but no completely Muggle doctor would be at all capable of researching the sort of magical healing methods she was familiar with. Perhaps she was a Squib, if she was from Hermione's world...