T sounds EXACTLY like m friend (ex friend?)'s girl twin. She was JUST like this with Zella, pitting her brother against her and obviously enjoying the tears from bewildered Zella. She lacks empathy. In this case I can tell it is the parents fault, they openly prefer the boy, dismiss the girl and always have. THough I can see the girl is acting out the fragile attachment it still makes me ENRAGED and I detest the little twerp. She is the one that jumped up next to her mother while we were both on the couch and began pummelling my pregnant belly with kicks.