I'd never heard that there was a term for it. Apparently because women and girls don't outright bully, so another term for the behavior was devised. It's a big deal. You have seen it in action. I'm glad society realizes it's a bigger problem than just the schoolyard bully, but that it's equally in play as adults is disappointing.
From Wikipedia:
Relational aggression is a term used to describe psychological (social/emotional) aggression between people in relationships.
Relational aggression is a form of aggression where the group is used as a weapon to assault others and others' relationships. It uses lies, secrets, betrayals and a host of other two-faced tactics to destroy or damage the relationships and social standing of others in the group. Also known as covert bullying, social aggression, 'female' bullying, or family bullying and it is a cruel, cunning, and covert form of aggression.
It is often associated with girls and female cliques in schools. Grown women and men also commit relational aggression in spousal, familial, sexual, social, community, political, and religious settings ~ and the internet community!
It would be a different community right now without the 'PM' workings that would appear to be the tool of 'The Game' that is being played. Divisive factions and gangs in the playground lapping up the drama not caring when a previous friend in the community is hurting and crushed, now excluded and isolated, a shunned target.
True sense of real community has a voice in common that's true (unity).
Hopefully one of integrity.
Guided by commonsense.