I think you are very self-aware. Don't be surprised if her drinking causes a big problem that she comes to you to solve in the very near future.
Can you see how you have set yourself up as her Corrections Officer and Counselor? You're really in way over your head with Addictions Counselor; that's a specialized field, and even then with all the training, the outcome is very rarely sobriety. I've tried to play counselor. I was in way over my head, and it ended in a lost two years of my life. Never again.
Those roles are not a comfortable place to be - and don't work well in romantic relationships. It should be two healthy people standing on their own two feet - otherwise there is going to be resentment on both sides.
Good luck. Stand by your boundaries, no matter what.