lodo, I'm having a hard time putting my finger on it but I sense that you have some type of urgency to make a change. I think going dark and withdrawing the friend connection should have happened a while ago when you got your own place. IMO if you go dark right now it will look you are pouting about her birthday party. Have you heard anything about that? How was it?
Don't try and force something to change and don't make a change to try and get a reaction. That's a mind game.
Live your life while you are still living. Riding the trail less traveled.