Did it all. W continued to claim I was controlling her. I just kept telling her that they are my boundaries. She asked what my definition of boundaries was: "Things and actions that go against my morals and values that I cannot accept happening for me to be happy." Thought about that one for a little while.
She claimed "I cannot help where my heart went." I said "I know, I cannot either."
She said: "I thought we would be able to work things out amicably?" I said, "That cannot really happen if my boundaries are continually being disrespected."
She claimed I was kicking her out. I said "I can see it feeling that way. I am giving you a choice, it is your decision." She was definitely getting emotional while she was packing her bags. Her choice, her consequences. I showed none. She asked what are we going to do with our S3. I said "This is his home." She asked where he was going to be tonight (my mothers or home). I told her I would let her know, as she really wants to see him. Said that is fine. I will let you know and you can come over. I cannot keep her from our S3. That is something I believe every child should have.
You handled this very well. ^^^
Getting an almost immediate grip on how to handle the "YOU'RE BEING CONTROLLING!" thing is imperative in these sitches. Otherwise, it will be used as a deflection (at best) or a WEAPON (at worst) against you Every. Step. Of. The. Way.