Your story is very similiar to mine. My W completed rehab for alcoholism but never worked a program when she got out.
She now claims she no longer has an issue. But because I didn't endorse her drinking a beer here and there, she found ways to sabotage our R.
There really is no advice. My therapist is also an addictions counselor. He said not many people can have a successful relationship with an alcoholic not in recovery.
Even when they are in recovery, they still think and act like alcoholics. It is a long road.
Keep going to al-anon. Read all you can about codependency and see a therapist if you can, specifically one who specializes in addictions.
If your W is drinking, she is sick. Realize there is NOTHING you can do about it. Work on getting yourself healthy.