Just a quick note to say hi!
I was just reading your wee note about your 4 year olds behaviour. I had the same problems with my wee boy. I just wondered have you thought about looking into aspergers its very similiar to austim. Children with aspergers would tend to be more out going around other kids but dont know how their meant to behave around them such as no understanding of personal boundaries whereas kids with austim tend to shy away and are very happy on their own. I hope this helps