My DS7 shares a room with his 9 year old step sister at his Dad's house. He doesn't like her much, he says she's mean to him, has physically hurt him on the odd occasion (I've seen the marks) and she never gets told off.
He started saying on the odd occasion that he doesn't want to go to his Dad's if she is there that day. He's now saying this every single time he is due to go to his Dad's.
I don't have a good relationship with my ex so am unable to talk to him about it (anything at all, actually) and the times the step sister has hurt him I've had a chat with her mum (my ex's partner), and she has just brushed it off.
Am I just going to have to say to my son that he's going to have to accept that she is his step sister and I will not be agreeing that he can stay at home? I always try and encourage the relationship with his Dad but he just looks so sad about the thought of going if he knows she will be there.