[MamaChinch]

It's not uncommon for toddlers sleeping habits to change a lot, coupled with her age (this is age where they start trying to stall) and the home two year mark and I had it happen too.
A couple things that worked: listening to soft music, a soft light in the room, monster spray, a checklist checking off our bedtime routine things, leaving her with a flaslight and some water.
I also asked her (with mykidsmoms suggestion) whys he would not go to bed. she said she needed to check on things, so we did, in between brushing teeth and story.....after a while she said she didn't need to check on things anymore.
When I tried the Super Nanny thing, she asked me what kind of game are we playing! You have to try different things and see what will work for her.
I have also let her watch TV to calm her down when we have been out and on her gymnastics night. Have you tried gradual retreat?
Oh, I put her lamp on a dimmer, too. She tells me how light she wants it each night. It's getting dimmer and dimmer.
Bless your heart...and good luck! You'll get through this phase.......