I had this great response and then my browser crashed, I'll try to re-create it.
Your daughter wants to be with you. Your 26 and 22 yr old were better at going to bed because there were 2 of them, so they could understand "it's bedtime for kids". You didn't have to spell it out, it's just the way it was.
I have a 6 1/2 year old. She is the same way, especially if she is excited or worked up about anything. We try to incorporate most of her delay-tactics into her bedtime routine: have a drink (milk or juice), brush your teeth, go to the bathroom, bring a glass of water to bed, read a story, kiss goodnight. This eliminates a lot of the delays.
My daughter sleeps with a night light and her door open. We are in an apartment and all the rooms are on one floor, the hallway that connects the kitchen, bathroom, and living room goes right past both bedrooms. When she is in a pattern of using a lot of delay tactics, I tell her as I am saying goodnight that if I have to come back in here the first time I will turn your light out, the 2nd time I will close your door. (same would apply for her coming out of her room, but since she can call to us, she is usually good about staying in bed). If your daughter doesn't use a night-light you can tell her no TV/favorite toy/video game, etc. the next day if she gets back out of bed. It's not as good as an immediate threat (and you have to remember to follow through with it), but at least it gives you something to warn her with BEFORE she does it the first time.
Another thing that helps, is to let her read a book herself for 15 minutes or a half-hour (depending on how late it is). I tell her how long she is allowed to read for and that i will come back to turn the light out and kiss her good night when the time is up.
Finally, if you don't know the book already, have your daughter read Mo Willems' book "Don't let the Pigeon stay up late" the next time you're at the library (she's really too old for you to buy it). While she's reading it, you can point out all the flaws in the pigeon's arguments. ("it's the middle of the day in China" - we're not in China) They would read this to the kids in my daughter's preschool and the kids would all shout out the reasons the arguments were no good (although the older kids did side more with the Pigeon). When my daughter is really being bad about going to bed, I tell her she's acting like the Pigeon, which helps make my point.
Good luck, those bed time issues are very frustrating! Prepare, warn, follow-through! (I guess you could even try praising her the morning after a successful bedtime routine)