No need to feel bad. If you raised the others from babies, they probably just adapted to your way of housing them. Her on the other hand, if she is used to something different that's why she is stressed. Of course balls can survive in lower humidity, and half hides. The information here is just what's best for them. So that we can try and get everyone uniformed. I took tupperware bowls and cut a hole in the side for my baby. It took me a week to get her to use them instead of her half hide. Now, that's all she uses. At least you have most of the basics down. Two heads are better than one