E.F.
Very Important: Put up a gate in the hallway or doorway so she can't escape the house when you're not looking!
You might have to get a little tough on her. My son made the switch last year and that's when we really had to pull out the disipline on him. We've tried everything and all of it eventually worked.
Give up on naps for a while. She'll be so tired at night she'll put up less of a fight.
Try naps on the couch with a favorite movie and warm blankets. (works everytime for my son)
Make threats and follow through like "stay in bed or I'm taking bunny away".
Explain to her that sleeping makes her grow big.
Let her play in her room until she falls asleep on her own.
Have a strict routine that leads to being very relaxed right before bed. Read books and play lullabys and have a good night light.
Don't stay in the room with her. That will just be another bad habit to break in the future.
It's really tough to bed train some kids. Keep in mind that a cheap second crib off Craig's List is also an option. In another 6 months it might be easier.