I'm no expert but that sounds like a bone thing. Possibly a genetic malformation. If shes still very young then it could possibly be fixed by making sure she eats a good amount of gut loaded and dusted crickets but its possible it may never be right.

Like I said, I'm no expert it just sounds more like a deformity to me, sadly. If she can eat, poop, and get in the water to soak then it probably wont be a major issue for her life. Just make sure there are enough low hanging leaves that she can get up on and feel some sembolence of normality.