With Kate you can tell it is all about her. She is not happy so she does not understand how or why should anyone else could be having fun and be happy.
Kate doesn’t seem to realize that the children are enjoying themselves. She is not. Sarah makes lemonade while Kate mopes and acts like a sour lemon. The children are taking their cues from Saray. They are having a ball. I’ve rarely seen her children so happy and well behaved.