[She doesn't know what to say, or how to answer his question, so she just watches him for a moment. She knows it's useless, lying to him. Because if he's anything like Allison, she'd know in an instant.

So with a deep breath, she nods.]

It's messing with you. I think it's somewhat like the mirror flood, where different versions of ourselves, from different universes, take over the version we're used to. This happened a few floods ago, Scott and I changed but Stiles remained the same.

[She hesitates for one second.]

The version of you I know, is a girl.