I'm not sure what was wrong, but I DID get her for free from Petsmart because somebody dumped her there... maybe they knew something I didn't... >-.-<
We found Rain this morning on the bottom of her cage. She had food and water etc. and she was fine last night when I put her to bed. I looked at the cage bottom and her stools were kinda watery.
I buried her this morning when I found her, and washed my hands before messing with Sora. It's a good thing I quarantined, although I still feel like crap about the whole situation. >;.;<