That's how she usually is with prey. I'm beginning to think she prefers mice, because she snatches those up as soon as she can. But anytime I've tried a rat, she takes a while. She still eats them, it just takes 5-10 minutes.
Thanks for the info on the moss. I've never used it before, so I assumed you just mixed it in. I didn't put a lot in there, so I could always take it out if this is going to pose any issues to her. I just figured it would be easier than having to spray her cage 15 times a day.