Relative has a 9 year old who she says is trans. She changed her son's name to a girl's one and changed pronouns used at school and stopped all friends and relatives seeing the boy. The boy loves long hair but is a typical young boy in terms of mannerisms, interests etc. He has got annoyed when mistaken for a girl and tells people that he's a boy. He told us that his mum had talked to him about being trans and he didn't think he was. We think it's his mum who wants him to be a girl. We are worried that she is manipulating him, we're not sure why. She has mental health issues and is autistic. School have gone along with the new name and pronouns. Family don't understand why she won't let any of us see him as we will happily support him if he is trans. We think the child is vulnerable and want to make sure that the gender change is coming from him not mum. What can we do?