yensid, you're right that "regular people" don't get it. You might want to start reserving talk about your A for Alanon and here, otherwise you're going to find that people make the type of remarks you've gotten on FB. It seems to me, from what I read here and also from what I hear from family/friends, that FB is a source of so much drama, upset, anger and confusion for so many.
I don't know how close you really are w/these women, even if you've known them for 11 years, but if there's any need to talk about the situation at all, maybe just focus on yourself and your own growth and learning. It's not really their business, and as you've seen, at least some will not understand anyway.
She may have her own issues w/alcohol or an A herself, too, hence her response to you.
Sorry that happened.