Even half an hour a day will help....a little more if you have the time. That's good that she's eating because you can get the calcium in her that way, [ powdered crickets] but it would still be good to get liquid calcium. One of my beardies had the exact same crippling in the front legs about 14 years ago, they curled in like that. I got it stopped right away with a good bulb and natural sun. His front legs stayed that way all his life, but he lived a long happy life, was big and beautiful and even wanted to breed.