A woman drinking 6 alcoholic drinks a day is drinking about 5 too many. It doesn't matter if she is drinking beer or wine or straight vodka, she's drinking too much and her rages are probably fueled in part by her alcoholism. But her alcoholism may also be fueled by her brain disfunction. Stop arguing with her. Try to keep your interactions brief with her when she is raging. Tell your school guidance counselor your mother is abusing you (because it is abuse). Go to Al-Anon meetings. You're doing fine in school and remarkably well given your home situation. Don't let any love or sympathy you feel for your mother keep you trapped in a situation she obviously cannot improve on her own.