Very cool youO!
I was dating a guy once... we were watching a movie and cuddling under a blanket. I felt some movement down by my ankles and then a few short moments later up near my chest, out popped a ferret! It was a bit surprising, I was like Oh! you have a ferret. He was lucky I was a good sport some other people might have smacked it across the room out of shock.
I guess what I'm trying to say, is if you don't plan on keeping her caged, you might want to mention it to guests to avoid awkward/surprising situations.