I have an alcoholic parent? Advice?

My mom is an alcoholic. I can say this because everyday after work she drinks and drinks, and then on weekends she drinks aswell. Like I'm not trying to offend anyone that likes to drink casually or whatever, but she gets drunk almost everyday or close to it. Anyways, on to my story, tonight we were having a small family get together with a few people from my moms side (her sister, her dad, my cousin) because my brother came home to visit (he only visits twice a year). So we had dinner and a couple casual drinks. After dinner is when things got bad. A couple people started to go past their 'limits'. my grandpa went home and my mom wanted to continue this little drinking party but I told her it was enough and everyone wanted to go to bed and that no one wants to come home to a party where everyone's drunk. (Me and my brother hate when she drinks and she knows it) so me & my brother were upset. So after I told her it was time to stop drinking she starting yelling at me and telling me I don't run the house and make the rules and that I had hurt my aunts feelings for not letting them drink and whatever. ( I texted her and she wasn't mad or anything, my mom literally made it up) but yeah, she made me feel like absolute shit, and she kept saying she was going to hurt my feelings or whatever in the future(idk).