She needs two identical hides. One for the hot side, and one for the cold side.

Fill up that tank with decoration and objects to make her feel secure.

Also, get some aquarium background and cork board and cover up the sides of the tank to add security. I've got a DIY somewhere on how to combine the two if you feel like searching for it or I can find you the link.

Young balls have a tendency to be nippy from time to time until they get used to handling. Don't hold back if she nips or hisses at you because she'll think it's okay to scare you off that way. If you just got her, give her a week to get accustomed to her new surroundings. She might just be stressed so do what you can do accommodate her needs and make her comfortable =]