You know? This place sounds more ideal for you than for her. Again, she is the one wanting change, so let her do the changing; don't allow her to manipulate you out of your home.
BTW, people always "seem" nice, until they can't or don't get their way. If she is "getting tough" with you, then she probably thinks you are a push-over. Even if you are, that is still no excuse for her actions. She is being totally selfish!
Her new plans SHOULD NOT include screwing your life up, simply because it is more convenient for her.
Geez, people like that really, really TICK ME OFF!!!!!!