I am glad you woke up feeling better today, it happened to me last week and I can tell you that I am feeling much better about things since that day.
The more I think about your session tomorrow the more I think this is the way to approach it. Our W's are expecting us to fight them on things, which only makes them angrier, I have come to realize this is a game with them, they want to win the game. My W even told me that the reason I am so upset is because I am not winning the game, that I am only doing things for myself to get back in the house so I will WIN. What this tells me is if she really feels this way, I am going to let her, that means I have to totally detach and not put any pressure whatsoever on her, she will have to make the call of when the "game" is over so she will be the winner, not me. I have completely stopped all R talks with her, I am acting "as if", the only way I will save my M if she comes out the VICTOR and makes the calls of when the time is right. I have a feeling you are in the same boat as I am and probably most everyone on these boards.
This is a sick game were having to play but in relationships that you are in that you are considered the controlling person as I was, the WAS has to take control and call the shots for a while and make their calls the way they see fit. My W even told me one time that the main reason I am so upset over this mess is because I have lost control. She wants to be in control right now and she is, I just have to live with it and see where it goes.
Good luck tomorrow, I really feel this is the way you need to approach it, let her see that she is winning the game and you are ready to play the game with her the way she sees fit.