Hermione noticed the bristling and thought that, like any sane person, this girl just didn't like demons. It made sense, after all.

What didn't make sense was the sudden breach of her personal space, and while Hermione was too polite to brush her off, she was still visibly surprised by the proximity as her arm is taken. "Er-... I don't know what there is to say, really. I'm a witch, as I've mentioned. I don't know if you have those in your world, or what they're like, but all that means is that I can use magic. It's not common, where I'm from; most people don't even believe in magic, in fact."