You are seeing clearly by her inaction what she really wants. While leaving feels cruel and an over reaction, i can tell you from experience that 40 years from now things will NOT be any better than they are now AND there will be plenty of times that are much worse. I was with a woman who initially was definitely more experienced and adventurous than myself but wanted to save intercourse for marriage. She shut down as things starting getting serious. After marriage she really shut down where if we were even a little intimate one night, for the next two weeks she would pick fights, be angry and go to bed either much later or earlier than i did to avoid any intimacy. I asked her years later about how her initial actions were so opposite her later ones; she said "because she thought boys expected it". I too have still the problem of not being able to communicate or work out anything with her. I was patient --way too patient. Whenever I disagreed with her at all, the fight instantly escalated on her part to a life or death issue that she had to win at any cost. She would literally do or say anything with absolutely no limits to get what she wanted in the present moment. I could never believe that she even realized what her words and actions were doing to the relationship. Years later I concluded that she knew exactly what she was doing and did not care. At one point she even said it was my fault because if I had stood up to her she would have backed down. (She may believe that but definitely not true based on some more casual encounters she has had.) For many years she worked out conflict by being a rageaholic until she got exactly what she wanted. So I stupidly stayed with her and even had kids together with all this unresolved. Now I am remembering all this and kicking myself for literally wasting my life. I am not exaggerating at all. In my life of denial, I literally wasted my life.