First, is her substrate sand? If so, could be impaction, if so try vegetable oil (I think, but wait for another answer on that) Basically they swallow sand and can't pass it, don't use sand, it isn't natural for them either.
Second, are you using undertank heating? It is better for their digestions?
Third, when did you get it? They are sometimes jittery after shipment
Fourth, try a vet.
Fifth, force feeding can break the animals jaw if done improperly...
Sixth, mealworms and crickets are a staple, and more than likely if she isn't eating an active criket she probably won't eat much of anything else