What do you do about a child teasing your other child? I can’t take my son constantly teasing his little sister anymore, it’s relentless, he has done it ALL day today teasing her and winding her up to make her cry. It’s making me so frustrated listening to constant screaming and crying all day. I’ve told him off, I’ve disciplined him. Nothing works, he still does it all day long. My other children do not do this and it is peaceful when he is not around. How can I tackle this as it’s really bothering me.