I suggest putting her in a smaller tank. I do not use tanks personally, so do not know the exact sized, but somewhere in a 20 long range should be about right. You may need to cover the sides of the aquarium to make her feel more secure. Part of the top may also need to be covered (tin foil) to increase humidity. You will also need two hides, one for each side. Make sure your temperature and humidity are in the proper range. Leave her alone in her new enclosure for at least a week before attempting to feed her.
Good luck.