[Interesting. So not only did that get his attention, but he immediately identified what it was she cast — so it's not the fact that she can use magic to begin with that's piqued his curiosity, but what it was she decided to do with it. Hmmm.]

Not dimensions, plural. Just one, and it's always the same. It's finite, too, even though I'm not positive how far it actually goes. Just that there are walls, eventually.

[To assist in indulging his curiosity, she walks over and sticks her arm in, then pulls it back out again.]

It's like...there's a space there, and I open up the door to it. I've been shoving the wolves inside. Helps keep them off my back.

[She shrugs a little.]

As far as I know, things that go in are still conscious and everything, they can move around within the confines of it. They just can't get back out until I open up the door again. Pretty good for holding things I want to carry around with me. Not bad as a temporary time-out, either.