Hi Buffy, sorry to hear that. If you don’t live in the same house, can you stop seeing them? Kids generally take after their parents and if they see your sister rude to you, they may follow that. I know that because my sister treats me like a servant when I am around them and the niece and nephew who are teenagers now have picked this up and order me around and bully me. I am so scared of my sister that I follow their orders. It is embarrassing and humiliating but it is true. I don’t live in the same city so the encounters are just Christmas season and Easter and will cut them off after my parents are gone.