my hamster is really hyper to-night

That doesn't sounds too surprising. After sleeping for so long in the day, hamsters are bound to be much more active at night! If she's continuously squeaking you might want to put some more bedding on the base of the cage so when she lands, she lands on something soft. If your hamster's a roborovski, all the more you shouldn't be surprised. Roborovskis run very quickly! Well I read one website about hamsters. They mentioned that hamsters are extremely active at night and can run up to 8 miles a night on their wheel! If the squeaking sound of the wheel disturbs you, you can try oiling it. Or get a Silent Wheel. Silent Wheels do not squeak at all no matter how fast it's spinning. Though they cost slightly more than normal wheels, it's still good to have your beauty sleep in peace! Happy mylotting and good day / night to you!

Well behavior like that is natural for a new hamster, after a couple weeks she will start to slow down. She's probably just excited about being in a new home.