She was (and still is!) pretty thin when I picked her up. She's about four feet and a little thicker than an adult corn snake, but her previous owners kept her in an 80gal with water, but that doesn't rule out dehydration. She was in a bad, dry shed when I first got her too, so maybe that has something to do with it...
It's just really perplexing. I mean, my other rescues were dehydrated too, but never did anything as outlandish as this.