It's really all about the makeup sex, fights you forget but a good lay will last forever...
It is not normal, nor healthy. Life is too short - leave the hooker!
if they didn't fuck there'd be a bounty on 'em.......Now, for the big questions: how much of this back and forth hurtfulness is common in long-term relationships? Is it acceptable? Do you feel you're better off alone in a situation like this? Am I just being a big sissy or do you think I have some merit in being upset here?
Having been on both sides of a one sided affair, I can say both sides suck. She's not sorry for what she's done, she's sorry that she won't have you for a whipping boy. Strap yourself to a Saturn V, light the fuse and get the hell out of Dodge.
"I have a budding career but put that aside to stay with her "in town" near a University where she works. I've got a job here for next year making good salary, and generally like the area, though staying here is professionally limiting."
Maybe I'm reading more into the above statement than is there but, it sounded to me like she was the only reason you're sticking around and that, deep down, you'd rather be elsewhere. Were she relentlessly pursuing the career opportunity of a lifetime, that would be a reason to sacrifice. If all she has is a day-gig she quits on easily and then gives you grief, I see no reason to sacrifice for that.
Again, maybe I'm mis-reading but, it sounds like you have far more invested in the relationship than she does.