Sorry to hit ya will all the posts you had me worried bud. Remember never do anything on impulse or anger. You can do this.
She needs to see a Jeff that is having fun and LRTing his @$$ off. FOR Jeff. NOT her. Your anger is perfectly understandable. You can't let her see it though. Harden up your heart.
Show her strength. Do not tell her you love her. Do not tell her you miss her. Do not act like you can't live without her. Don't ask her what she is doing. You don't care right now, your to busy doing things for you.
Start doing things for You. When she sees she finally can't control your emotions and your having fun for you, it will drive her crazy. She won't show it, but it will.
Be vague, distant, do not share with her what your doing. Let her initiate all contact. Don't be available all the time either. It will take time and if she starts to respond positively DONT stop. Keep it up.
Your not gonna quit today and your not alone. One day at a time. Let go of her BS.