If a friend becomes the victim of a relational aggression campaign, think how much you would appreciate her support if you were the target, and act accordingly.
The peak period for relational aggression is late middle school and junior high. As teens mature, bullies, physical and relational, are increasingly seen for what they are—people whose cruelty and manipulation cancel out just about any good characteristics they may possess.
As the social acceptance of bullying declines, even the bullies and RMGs who haven’t overstepped and lost their social standing will abandon (or at least scale back) their reliance on aggression as a means of getting their way. Those who don’t, often suffer severely for their blind aggressiveness as adults.
Will you have the opportunity to enjoy the spectacle of your school’s most malevolent RMG getting her comeuppance, as they always do in the movies? Maybe. Maybe not. But, as improbable as it may seem just now, you will, in time, stop caring about it.