Thank you everyone for the good ideas - and they really were. I'd never heard of putting plastic bags on the floor to listen for noise but that was BRILLIANT. Thank you for suggesting that.

I have to admit I haven't checked on this thread since I made it because I was afraid I would get more people jumping on me.

The good news is: I FOUND ADALAE TODAY!

She was in the same spot I found her in the last time she was loose. Obviously, I'd checked there 30 times before today and she wasn't there, but today something just told me to go look again and there she was! She likes to hide in this big box of junk stuff - extra cups, plates, an old blender, etc. And so I took everything out of her cage except for her two hides, and piled all of that stuff from the box around her hides and randomly in her cage. Maybe she'll be happier now.

I am going to try again to feed her tomorrow, though it's been a month since she's eaten and I don't know if she'll refuse again.

I am wondering if I shouldn't try to sell my enclosures and set up something more ... fool proof. But I don't know what else would make a nice enclosure for her. A 40gal tank would work, but they are so expensive. Does anyone have any suggestions? Maybe I could get my dad to add two more locks on her door, just in case... Yes, I think I will do that.