Sounds like now is the time for a 180. I agree with the others in that you should tell her that you had thought about it and aren't interested in cohabitating for two years. It's not what you want, so you're going to file. Of course you're not going to, but you've got to start standing up to her and this seems like the perfect opportunity.
Just my .02.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.