I am so glad I stumbled upon this thread. My 13m/o DD usually goes to sleep at 7:30pm. Two nights ago, we had her out until 9pm, thinking everything would be okay, because she was pleasant the whole time. However, when we got home, we had another thing coming. It took us almost 2 hours to get her to sleep, and tonight it took 3.25 hrs. to get her to sleep. Can anyone tell me how long I can expect her to be off track?