Girls! I urgently need your help. My daughter has a second tooth comin…

Girls! I urgently need your help. My daughter has a second tooth coming in, she's sleeping terribly, constantly waking up at night, but that's all a big problem. Her schedule is messed up and I don't even know what to do anymore. She goes to sleep around 2:00-3:00 am! We've never had this before, she sleeps until 11-12, I try to wake her up, today I woke her up at 7 am, so by 9 she fell asleep and that's it. Yesterday evening she didn't let me go to bed, she still went to dance practice until 3:00 am, we lay with her