Everytime you ACT tough, she does a partial 180. You appear to get tough, it kind of scares her, she calls your bluff, she discovers you're bluffing and it's business as usual.
Ask her if she plays texas hold'em, she's got skills in the bluffing and calling other people's bluffs department.
Stop acting tough.
Rule: stop doing what doesn't work, start doing what does work.
Be a man, be strong, move on, detach, stop playing this game with her, it's just a game with her, she keeps testing you to see how far she can push you and you keep allowing it to happen.
Until you create the actual crisis that she actually has to respond to and act accordingly to, you guys are just dancing back & forth, trading positions.
