The best thing you can do is be consistant. The routine will get to be routine for her and she'll know that she's going to bed whether she wants to or not. My kids have cd players with the cd of their choice and night lights in their rooms. The first time they come out they lose their music, the second time their light and the third time their door is closed and they are in the dark. They know better and stay in there. I also would make her get up in the morning. Our youngest is 1 and he's the alarm clock for everyone at about 7 am every morning. He's the only one that naps during the day and they are all in bed around 7 pm so they can get 12 hours of sleep each night. Works great!
Also try to get her Dad with your program if you can because one weekend with him not following it can set you back a little.
Just be consistant and it'll work.