Hmmm... I'm not sure. Photo's of your frog would help us a lot in identifying the problem.

Have you been dusting her feeders with a calcium + Vitamin D3 mix 2X a week, and multivitamin 1X a week?

If you are really concerned, or it gets worse, I'd definitely recommend a Vet. Make sure it's a Vet that treats exotics.

Oh, and welcome to the Frog Forum!