Well, if you are desperate enough, you'll apply some tough love here, or next year you'll be on here asking how to get your daughter out of your bed.
She has now acquired a habit of waking up so that you will come in and stay with her. She is employing every trick in the book to get you to pay attention to her, and you are giving her every incentive to do it.
Either tell her that you are not going to come in any more and she will have to stay by herself, or prepare to be miserable for a long time.
You should lock your bedroom door and stay in your bedroom. If she starts wandering the house, turn her doorknob around and lock her door from the outside. It is a safety issue for her to wander the house, so you need to keep her in her room. It doesn't matter where in her room that she sleeps - as long as she is in her room.
When she gets bored crying, fussing, being in the dark alone, she will start falling asleep. If she figures out that you really mean it, that you are NOT coming in her room, she will stop waking up.
It's your decision whether you allow her to keep you up, or if you give her Mommy's 3 am bootcamp. I'd do the bootcamp if I were you.
Dawn