[AprilPearl]

Sometimes hamsters keep funny hours. There are ones who don't get up until 1 or 2 am. She could be one of those. Or, alternatively, she may have been awake inside her house and having a groom or something. I have watched my hams on a night vision camera, and you'd be surprised at all the things they get up to - it's not just wheel running. If she is well and healthy, I am sure she isn't sleeping through the night and day! If she's new, she may also be getting used to her cage still. It might help to have a lot of covered areas, deep substrate and places to hide so that she doesn't feel exposed when she comes out.