I am very upset with difficult child 2 he got angry and acted impulsively with my niece, 5 y/o, who was spending the night tonight. difficult child 2 had taken her pillow and was teasing her. She jumped on his back playing. She fell off his back and on to the couch. He got mad and put the pillow on her face and pushed it. I got there within seconds and he stopped. He tried to make excuses for his behavior but I sent him to my room to talk. Then I explained to him that he could have hurt her he is 3 times her size and he did feel bad. I told him that it was unacceptable behavior and that he is to never put his hand or anything else on anyone unless it is in self defense. This is the first time he has done anything like this I am in shock that he would do such a thing he really could have hurt her and was doing it in anger! He did punish himself to his room for the night and is now sleeping but that doesn't change anything. I have no idea how to handle this one....help!