Is she kind of rough around the edges normally or only when she drinks?

Nothing good comes out of drinking. It baffles me when people ask why this or that keeps happening to them or their friends etc but then it turns out drinking was involved. It sounds that she became confrontational after a few drinks.

These kind of public arguments is kind of common when substances are involved. Not common among sober people

Might be time for new more wholesome and sober friends and sober activities. Plenty of fun interesting people don’t get intoxicated in public and aren’t getting into public brawls. Embarrassing. Time for a change