Have you tried a product called Parazap? It helps clean out there digestive system while stimulating their appetite, it is extremely safe and has helped me when I have animals going on hunger strikes. There is also a medicated pelleted diet that can help things of that nature its called Reptile Xtra by Jungle, its an anti bacterial food. I hand feed it strictly for two weeks plus water with added electrolytes. Also try a parakeet seed mix with some dried split peas added, mine loved that. Otherwise, I do recommend a vet visit, she is looking very thin. Good luck!