Another thing to remember
Sometimes girls choose to surround themselves with this kind of abuse because they have learned to rationalize FOR these men. THey have learned to say "it's not his fault, I caused it"
And for the most part, that's bull
THey make excuses and say "he's really a nice guy most of the time, we were great friends"
They might have been good friends at some point, but that's just because these men often only act this way towards spouses and best friends. It's a comfort level that enables the harshest realities of Narcissism and other such abusive personality problems.
This girl needs to pick up a psychology book or a self help book or something and realize that she doesn't need to be doing this to herself. SUre, there are some things that these men are doing to her, but for the most part, she is allowing it to happen and if she doesn't really feel the need to be around it (drama queens), then she will be able to peg the signs early on so that it doesn't happen again.
These men will eventually find the girl who will balance them out...it takes time, but the right girl with the right knowledge will set them straight. She needs to let that girl handle it and leave him alone...cut him out of her life all together. If she really cares about him, and that's why she still allows him to threaten her, then she needs to realize that she'll only harm her mental situation even more and stall his progress.
And if you really want her to learn, you need to be willing to take the risk that she might get mad at you or stop talking to you for a while. I'm sure she'll come around and appreciate your kindness...if not immediately, then eventually.
Maybe her last interaction with these men should be to set them up with nice, cute students of psychology or aspiring clinical psychologists...because that's the only way everyone will win. I mean...hookng him up with a psychologist...imagine, that girl will NEVER be bored and will be CONSTANTLY be fascinated instead of harmed by his behavior. Trust me on that one hahaha. I have an angry narcissist of my own ;)