Quote Originally Posted by Wh00h0069 View Post
You could try moving her into a smaller enclosure, feeding ASFs, or feeding mice. I prefer moving them to smaller enclosures.

Hope this helps.
I agree with the 2 (bold) out of 3 mentioned above. Also I know it may sound weird, but have you considered having a fecal done? The no weight gain sounds like she could have internal parasites, if it were me, I'd check just in case.