I started looking into alcoholism seriously and came to discover that I'm an enabler. I pay for her to drink. Stop doing that. I cover up for her when she's drinking or gets drunk and embarrasses herself. Stop doing that. I have been part of the problem but not in the way I'd originally thought.
This brings me to where I am today and my question: What do I do next? How do I stop enabling her given our situation? Let her clean up her own messes. It isn't your job.
Another good thing would be to look for Al-anon meetings in your area and start attending them. Face-to-face support will be a tremendous help.