Before my son started kindergarten, he and his sister used to go to bed around 8 or 8:30 (and sleep until 8am), so we ate at around 6:30 or so. NOw that he is in school and not really napping, he pretty much needs to be in bed by 7pm...some night as early as 6:45 because he is so tired...and it will show the next day in his behaviour if he doesn't get that sleep. That said, if your daughter is sleeping her full 11 hours and not showing signs of being tired...and you are enjoying this schedule...well, I wouldn't worry about it! Do what works for you!