[Flossypet]

If your hamster is sleeping in the tubes you will probably have to remove those eventually as they are not really big enough for a nest and she is probably not so comfortable there.
Does your hamster have another safe place to run to or nest in?

The first thing for you to do would be to try to get her to change her nest. If you make another area of the cage really comfy and cosy e.g. a plastic house she may choose to move in there.

I think the problem at the moment is that she is extremely nervous being in a new place and as she can pretty much live out her life in that little tube that is what she is doing.

Does he know how to use her wheel? At first I had to get my hamster the same wheel that she had in the pet store so that she had a wheel that she knew how to use. Then I put in the wheel that I wanted her to use as well, and when she was comfortable using that one I took the other one out.

What cage is she in?