Poor little thing.
Can you run down her diet and eating habits with us?
How much and what a day?
Insted of going right to waxworms you might want to try switching crickets for a slightly higher fat worm, like Phoneix, Silk or butterworms as her staple.
They have soft bodies which make them easier to digest, which might help if she has struggled in the past.
Ruben has a delicate digestive system, and it takes very little to upset it, he has made great progress with butterworms and has even moved onto Superworms now.
How is she with eating veg?
I cant say enough good things about squash for weight gain. It is naturally very starchy and promotes weight gain in dragons.
Ruben was SO frighteningly skinny when I brought him home. Now he is a big chunk of love!
Anything you can do to get some squash into her will help, be it raw grated, raw sliced, part-boiled or in babyfood form it really could help.
Holly