I moved in with my partner last year, I have a 7yr old lg, he has a lg and a step son. Things were fine but then his step son started saying things like this is my home and not yours, this is my family not yours etc to my lg. His kids only come a few nights a week and my lg is here all the time. Recently my lg behaviour has changed and she has started being naughty by shouting, not listening and hitting his step son. She hits no one else and only acts out against him. I can see something isn't right with my lg but she wont open up. I've been trying to deal with her hitting to stop it however nothing I do has worked and now my partner has said she isn't allowed to be around his children or play with them until she can be trusted. She is being isolated and I worry that will make things worse. Its causing problems between us and I need help before it escalates anymore. Any advice would be grateful.