Do you know what her conditions were before you got her, like what she was fed?
All your stuff sounds right. I was just thinking depending on her diet before like if she were being fed fish or something maybe long-term parasites could cause that sort of malnutrition. Because an adult shouldn't go from being normal to being that skinny after just a week of not eating.

Another thought; it looks like she isn't retaining water like most pacs do. Not sure what that would mean, but it strikes me as odd.

Honestly, you probably need to go to a herp vet if you can. This looks pretty bad and there's no obvious cause for it.