Very sorry to hear of your situation. If I can make a suggestion it might be good to part for a few days and let the emotional turmoil cool down as it were.
Spend this time aliasing for yourself why your relationship became so distrustful and weak. After a few days she will start missing you and she'll be in a better state to talk.
Have compassion and listen carefully, you may be capable of saving this relationship if you really want to......good luck and all the best