It's bizarre. I think she thinks it's endearing or affectionate but it's just disrespectful. He's a very sensitive little thing who is already highly self conscious and everything he says she mimics in his tone of voice / accent but in a whinier way. It's painful. I've told him he doesn't have to talk to her but he now avoids her and it's just awkward. Maybe I'm mollycoddling him and maybe some people think that is a type of affectionate way of communicating with a child when you've no experience of being around children? I am not sure what to say or do without offending her as we are a close family and I think she would be offended. Any ideas?