Sleepy times are here AGAIN!

Three nights in a row! Isabella climbs into bed, listens to books, says her prayers, and then lays down. No crying. No whining. No screaming "MAMA MAMA". The day she did not have nap, she went to sleep right away. The other nights, when she has had a nap, she will lay in bed for a few hours talking and singing to herself-BUT SHE DOESN'T SCREAM FOR ME!!!! Have we finally reached the point where I don't dread bed time?? I hope so :)