Yeah I still see this as a big time problem. I mean what's going to happen when he starts getting older? Not only is he not going to able to interact with kids his age outside of school on his own, he's going to end up being ridiculed at school because of this. It also goes both ways. He needs to understand that getting a bruise or a scrape on the knee isn't the end of the world and she needs to understand that she needs to let him get some space and play at parks and go to swimming pools with other kids and that you know kids get bruises, cuts, scrapes, broken bones etc. and it's just kids having fun. Accidents happen sometimes but not letting a kid experience anything for himself and his mom being overprotective isn't going to help him at all. I really don't know what to suggest. Maybe you call a counsellor or therapist or something and see if they'll give you advice as to how to bring it up, when to bring it up and what to say to her after it's brought up.