Welcome!!! And GO YOU for going to your first Al-Anon meeting!
Is this normal behavior?
I in no way mean to make light of the hell you're living -- I've lived in alcoholic hell as well -- but I sort of laugh a hollow laugh at that question because... well, alcoholics tend to create a whole new "normal" in your life...
I think the way I've explained my AXH's behaviors is... for the addict, nothing is more important than protecting the addiction. You saying you won't enable your wife anymore? Is a threat to her addiction.
She might leave. But another thing that in my experience is "normal" for alcoholics is saying a bunch of stuff they never intend to act on.
I hope you keep going to Al-Anon, because they're lifesavers, whether your wife gets sober or not, whether you stay together or not.
And I hope you keep hanging out here. This place is my Al-Anon away from Al-Anon and I love it here.