So sorry this is happening to you. My best advice is give it time, give her space and continue to lovingly press for counseling. My wife and i had a bad period in year eight or so, and we continued on, had our second child and are now in our 26th yr.
When she throws words of hate around, she may be in the "anger" phase of mourning and that often passes. In the meantime, make sure you are seeing a therapist and try to surround yourself with people and supporters in order to combat the loneliness. Isolation is not your friend in times like this.