Her change seems "sudden" to you when in actuality she had been planning this for awhile. You're just playing catch up.
And why do you keep thinking that you have to move out? If she is that unhappy, she should leave. Simple as that.
"Maybe I'm still holding out hope, maybe I'm embarrassed to ask any friends or my parents if I can crash there for a while. "
Nothing wrong with having hope. But don't ignore the reality of the situation. Stand strong and do what YOU want to do. Keep your changes consistent no matter how much she is raging.
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.