I'm so sorry Kenny. I just went through a similar situation with my wife of 17 years. 8 years of heavy drinking, recent weight loss, fell and injured herself and was treated for wet brain. Still in a physical rehab facility, hopefully will recover.
I did all I could do, but in the end I had to do what's right for me. I wasn't the missing key to her achieving sobriety. And sometimes our leaving is the impetus for them getting better. But regardless how she does, you deserve to be happy.