they are not really going to put weight on... as long as her hip bones arent sticking out she ll be fine. do you have a water bowl in her enclosure? i ve noticed that a water bowl helps rehydrate my henkels and sikorae faster than a shower or spraying. shes probably not captive bred. but that doesnt really make a difference. try feeding by hand or with forceps so that you can monitor how much shes eating. i feed all of mine by hand just to keep tract of what theyre eating.