Hi Letsgetthisbread, welcome to psych central. I think you may find some alanon meetings going on via video chats. Go online and google alanon.
www.flaalanon.org use that as a search which will give you a link for all the alanon meetings in your area. Also there is
help@acawso.com
Yes, some alcoholics can be mean and rage rant and I am sorry that you are experiencing that (((caring supportive hugs))).
It's a waste of time to argue with an alcoholic, they DO NOT LISTEN. Yes, and they definitely can act like azzholes and it's everyone elses fault not theirs, their rants can be loud and just awful and abusive too.
It's sad because if she lives with you she is putting you and your father and this friend Dan's very life at risk. Alcoholics don't think about any of that, it's a very selfish disease.