Well, technically its not a friend... its a coworker and they'd like to keep things friendly in order to continue having a good working relationship. This coworker is plain nasty and mean to people she doesn't like, and will make their lives miserable. The other woman would like to keep their working relationship friendly without going to the principal and complaining about something the other teacher did.... she figures someone else will either complain about a similar misdeed or another teacher will report her for this incident instead. Hubby says that teachers are the meanest, cattiest women he's ever known! (and I tend to believe him based on the stories he brings home)