You need to explore with her in the daytime hours, not around the anxious bedtime hours, what might be troubling her ... school, family problems she might be picking up on, a lack of time spent with her parents/friends, a recent death, accident, separation, a frightening incident, movie, TV show, etc. Usually, whatever is causing a child's bedtime anxieties, fears, and nightmares is a manifestation or continuance of things that are troubling them in their everyday life, during daytime hours. If your daughter is experiencing and waking up from nightmares, make sure they are nightmares and not night terrors. She will be able to talk to you about the content of her nightmares whereas night terrors make kids wake up screaming and when you attend to them they are not fully conscious. Kids will most likely push away from being physically comforted from night terrors and will awaken with no memory of the event.
While you are slowly finding out what is at the root of your daughter's nighttime fears and "stalling" and getting up, please be gently reassuring to her and physically comforting to her as you reassure her that you are going to help her be able to have a happier time going to bed. Treat her with kindness and not with blame and frustration. Abide with her. She's not trying to make your life miserable; she's trying to deal with some anxieties that are overwhelming her. Sometimes reading stories during the daytime about kids who have nighttime fears and who deal successfully with them is a good thing to do. You may also want to read Dr. Richard Ferber's book, Solve Your Child's Sleep Problems, for some additional ideas.
Good luck. Your little girl and you will soon be over this hump. If it persists unabated for three or more weeks, it might be a good idea to consult a child therapist.