Dee, continue to go to Gymbaroo. We too got there and although I was never told to keep an eye on Mackenzie as you have been I also think it is up to the other mums to step in and stop the biting etc if they see it happening to their child so it's not just one sided. As you said you watch him like a hawk and all you can do is apoligise if he gets one in before you can stop him. I understand you being upset and I think the Gymbaroo lady could have handled it better. Sometimes they just don't think. Don't be discouraged, if anything socialising is the best thing for correcting behaviour, how else are children going to learn how to act/socialise with each other. Is there any chance you can get into a Mothers Group? Talk to you MCHN about setting you up in one in your area. They are great not only for the kids but are great for you too. Don't feel bad or belittled, we can not control little people - and you will be able to tell who the little girl was because I'm sure the mum will try and stay clear so don't be discouraged. All kids have some type of issues and this one will be over soon. Just remember no one is to blame and it is just a phase.