No, not in the mansion. At least I don't think so. But in this notebook, it says I've run into her before, and she's not really the type to go away.

[She'll keep reading, pretending she hasn't looked at all this before, but hey, Ryoko never drops anything really interesting, so if the mirror's going to play the part, she'll share a little more than the Real normally would.]

Um, not even if you bite her apparently.