I see. I thought that's what it looked like.
Yeah personally I would say that even for a dwarf that is a tiny cage, but if you are planning to upgrade her then that's great. She might be a little restless in the small cage. She sounds like quite an energetic hamster so I would get her something nice and big when you can.
I know when I've had to put hams in smaller cage on short term basis they have been very restless and energetic, always rushing about and dying to come out and play.
Does she have a good wheel in there?