She recoils a little, apology seemingly rolling right off her as she retorts, "Maybe... I'd have a better idea if you told me just what you are."

She'd assumed human until now -- hoped, from the blood and all visible indications - and although he's clearly not one of them, the things from beyond, they could regenerate themselves, tapping into the endless drain of energy they had accessed in her dimension. So this is an uncertain grey area, and she's not about to trust anyone just because they sound like a nice person.