She would be still very alert and on the go even when passed her normal sleeping time. She would roll, babble, crawl, making melodies.... but sleep. Here (the video below), you shall see by yourselves. Video was taken about 12am plus.
P/s: Pardon on the angle of the video. Took with my SE phone but unable to rotate to proper angle. Please do not strain your neck...we shall not be liable for it ;)