Al-Anon is a great first step. Maybe it will encourage her to seek recovery. But maybe not, who knows. My RAH was defensive about me going to Al-Anon at first...took him a while to make his peace with it.
Being prepared it key to feeling empowered about your situation. I am glad you had a good evening and can still say you love her and still have hope while at the same time setting some boundaries for yourself. That's awesome!