When DD goes to playgroup there is one little girl there who is VERY dominant and bossy. I have had instances where she has been mean or pushed DD and I will always say to her "xxxxxxx don't do that, it isn't nice to push etc", normally when I speak up the mum will then call her daughter over and talk to her about her behaviour but I don't like to step in immediately as DD needs to be able to stand her ground and learn how to manage the situation - even though she isn't quite 3 - it is still an important lesson for kids to learn.

However when DD starts getting upset or was being ganged up on, I then go over to DD and support her and tell her that we will go and play with some of the other girls who are nice to play with.