My hamster seems overactive?

I bought a new cage for her two days ago, but included some of her old things in it to make her more comfortable. I used some of her dirty bedding as well as the little house that she adores. But she seems like she hasn't been sleeping much. She normally wold wake up around six thirty, and I would put her in her ball for a while. Then she would wake up again around eight at night, and once more in the middle of the night. Lately, she's been chewing on the bars of her new cage, and hasn't been getting much sleep. What can I do? It seems like she stressed from the new environment.