As long as you think you have no choices, that you can do nothing to improve your life, nothing will change for you. Or for her. If you choose to continue enabling and living in what sounds truly repulsive conditions, that is your choice.
You might want to look at it from the angle of what your enabling does to her though.
It takes away her responsibility for herself as an adult. It sends the message that she incapable of taking care of herself, puts her in the position of being the eternal irresponsible child to your position as parent. It sends the message that it's ok for her to throw her life away.
I too made those marriage vows. And meant them. But I came to understand that God does not want anyone to throw their one and only life away because their spouse chooses to put alcohol above all else, even God.
Have you tried AlAnon? Or individual counseling?