Leave, never go back, never contact her again, for the next few months, root hookers, watch heaps of porn and masturbate a lot, get drunk a lot, smoke lots of weed, every-time you think something positive about her, remind yourself of what an argumentative whore she was and that it only would have become worse had you stayed. After a few months of this, you're good to go. What to expect? Peace and quiet and the pending expectation of doing it all again with someone else (probably with the same result - but what the hell eh!)