I say this whole debate revolves around the word "grass" which you used at the start Charlotte.
It's an imotive word same as snitch or informant- telling tales.
All well and good slagging such people off until it's your kid being bullied at school then nobody will say who'se responsible through fear of being a grass.That can't be right.
Old people beaten in care homes,a kid knocked over hit and run, etc etc.God help us if our society adopts the warped idea that its not worth saying anything cos it's already happened!!!
You did right...you stood up for something which had no voice