What's in this relationship that benefits YOU in any way? All I see is emotional coldness at best, abuse at worst. I know that you desperately want the partner you thought you fell in love with. But you may never again experience what you thought you had with her. I say "thought you had" because people do tend to be on their best behavior early in a relationship, when things are new and exciting. When actual real life intrudes (and especially where there is alcoholism and addiction in the picture), that person you thought you fell in love with might not actually exist--and maybe never existed, except in your starry-eyed mind.
I'm not trying to make you feel bad--and frankly, I don't think I could. She's doing a pretty good job of that on her own, and you are enduring it, in the hope things will be better.
But what if they never are? How long will you hang in and suffer?