34-year-old woman leader in office who deprecates workers, stops talking or relating to them if they go to supervisor to complain about her. Stopped talking to a co-worker for one year who was prior friend. Stops teaching new job to disliked employeed. Only relates to idol and favorite at the moment.
Talk to your trade union, if you are a member, or talk to the leader's boss and complain about her behavior.
Read about narcissism in Web4Health.