Italians have a good saying for these type of people. They say "meglio perdere che trovare" and it means "better to lose than to find" and it's true.

I would definitely not want people like her in my company. These people are not friends. Tell her you don't feel comfortable with her drunk behavior and avoid her. Yes, drama is going to follow, but it's a small price to pay for your future well being. If she doesn't listen, there's not much to do.