She's probably a little on the small side because she's refused food before and I didn't realize I was supposed to feed every 4-6 days when I got her and was going once a week. My most recent attempt was a mouse, and while she was interested, she didn't end up eating it. I'd like to try a few other things before trying live, but if worst comes to worst, I'll give it a shot.
I'm thinking that freezer burn could be the issue. I've noticed a little bit on the past few rodents I've offered. I probably won't be able to get more until Thursday, though...