You are very gracious about my posting. I can truly see your dilemma. I guess what I should have emphasized more clearly in my post was that in my particular situations, I had no cause compared to yours with which to struggle. You, indeed, have serious issues involved.
Years ago, one of my mother's sisters was divorced. No one spoke of it very often. It occurred in the 1950's. The reason was similar to yours in that her husband was on the state police force and in a struggle with a prisoner, was struck on the head with a gun. After that, he was never quite the same. His behavior drastically changed and he became involved in illegal activities and after she asked him to leave their home, broke in and threatened her with a gun. She had him arrested and divorced him. This was a big scandle in their small town.
Please know that I am in no way unsympathetic to your situation. It must be heartbreaking especially with your daughters to consider.

Hugs