She will eat anything when hungry enough. At her size offer Hopper mice pre killed when assist feeding every 3 days.
Right now the Cage is TOO BIG and is the reason shes not thriving. Drop down to a 10gallon or 6qt tub. Also ditch the stick on thermometer hydrometer readers. Go buy a digital one at walmarts for $12 and get a accurate measurement.
Be sure if you go to a 10 gallon tank get 2 identical hides. If you do the 6qt tub all you need is one hide and water bowl.