I'm going to GUESS that she felt like she couldn't make any/msny "right" (correct) choices around you. That she felt like you were always correcting her, or telling her how and why you knew better/knew how to do it better/made better choices, or done shiz like that. I'll go out on a limb and say that you reminded her of the ways her dad treated her wrong (speculation)
Regardless, one thing is clear - she's been holding onto her resentments for a while, and not talking to you about them in a problem solving manner. THAT is why the breakup felt sudden/pseudo sudden
I'll tell you this - she better get a handle on how she communicate inside relationships, or she will never be successful.
I wish I didn't have to tell her to be careful.. but believe me when I tell you this, she is quite a naive character.. I had to help her find a mechanic for her car, as she got ripped off a few times.
She was paying twice as much car insurance as she should have been paying, she asked me to help her find a better policy.. Which I did.
Her last two partners (according to her) treated her terribly... Her last long term partner, left her and moved in with another woman.
I'm probably one of the few people who treated her well.
We only had a couple of little arguments, and those where just recently.. Maybe she became resentful.
This is the problem with long distance relationships, its difficult to communicate and resolve problems face to face. MOST of your time is spent apart from each other.
