Hi Tash, and welcome. I think you've pretty much gotten the rundown of how this ACoA thing works. All the screaming, pleading, letter writing, and ultimatums won't make your mother stop drinking. If we could love them or nag them into sobriety, then none of us would be here. Nobody likes to hear that there's nothing they can do to control the situation, but it's the truth. Get to an Al-Anon meeting or read a few books to learn how to protect your own well being while the chaos rages around you. I wish you all the best.