It sounds like you're on the right track. You can also try gradually disengaging with her as she relaxes. Scoot gradually further away, look off in the distance, stay quiet, and respond to any talking with "It's sleeping time, and I'm closing my eyes because I'm tired. Good night." One thing I would recommend trying, based on my experience with my daughter, is at some point when she's nearly asleep, whisper "Good night," and walk out. That way she won't freak if she wakes up and you're not there -- she'll know you're leaving, but be too tired to care. Good luck!