I don't often post with advice anymore, mostly because others are much wiser and more tempered than me. But your post resonated with me.
I had a very abusive mother growing up. I won't go into details but let's just say the face was her favourite target using whatever she was holding, books, pots, shoes... etc. I suspect she broke my nose as a toddler as my ERT said I had the worst septum she had ever seen.
Despite all of this, I loved her and only wanted a normal loving parent back. Even as a married man, I carried the wound with me and she could ruin my week with a phone call, and she had impeccable timing.
It took a very enlightened and honest counselor to get me to see things, not as I hoped but as they were. He asked me if I loved my mother and I said no. He congratulated me on not lying and then told me that she will never change no matter what I did. This is who she was and I was paralyzing myself by constantly trying to fix her. You see, I was trying to apply reason to an unreasonable person. If only I could explain things better this time, she would finally understand. She never did.
The problem is, as I only discovered years later, I had married a woman much like my mother. Although she never tried to stab me with a kitchen knife, she was emotionally transactional and distant, unable to give or recieve love in any authentic manner. And I carried the slack, trying to move the pieces around the board to get her to finally have an epiphany, which Sadly never came.
It wasn't until I realized that she was who she was and would never change, that I finally saw my situation as it was and not as I wished to be. She was a 50 year old version of her 20 year old self, which was stuck in her childhood. My guess is that her development was arrested during her father's infidelity.
The point of my diatribe is this. Once I saw my WW with fresh eyes I came to the realization that even the best possible version of her was not good enough for me. I deserved better and I wasn't going to wait around hoping she would change while wasting my life.
I remember the day I told her we were getting a divorce. I sat her down and asked her a simple question at about the 6 month mark. What are you doing to help me heal? Her response: I can't be there for you until you are in a better spot because you make me feel too guilty. I shit you not. That is what she said. After all of the MC,IC, conversation, tears, pain, and trauma, she couldn't help but make it about her. So I pulled the plug and went to bed.
It's been 7+ years now and you can read about some of my journey in NB. I miss family and even a partner at times,but I am content with my life. I hope what I shared helps in even a small way. Good luck.