Take her to a vet - she needs to have a fecal test done for worms (which means you need a sample of her feces).
In the meantime, you might try buying some Jumpstart, which is supposed to help stimulate appetites.
Or have you tried giving her Superworms? Silkworms? Waxworms (only as a treat)? They might stimulate her appetite.
Or, go to the grocery store & buy some Chicken Baby Food. Stop by the pharmacy and get a syringe (the kind that you use to give medicine to infants). Mix calcium into the baby food, then put maybe a milliliter into the syringe. Gently hold your gecko so that she can't get away or wipe her mouth on anything.. Then put a bit on the end of her snout - they'll normally lick it off. I've had to even put it over the nostril area before - can't breathe, so they have to lick it off.
~~Dusty Windom
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So Many Alleles, So Little Time...! 


@
~~The Gecko Barn~~