My little 4 year old cousin is really worrying me with her behaviors. She likes to be mean to people. She tries to belittle people when other people are around. If you tell her not to do something because it will hurt someone, she will immediately do that action. Her parents are split up and live in different states. Right now, she is down here with her dad's side, which is my first cousin. While she was with her mother, she did something very scary to me. She plays with the little boy who lives next to her. They are about the same age. He had 2 gerbils and gave her one. She took it home. The little boys mom found out he gave it away and took him over to their house to get it back. First, my 4 year old cousin refused to give it back to him. After being told by all to give it back, she goes in her room and brings it to the door. With everyone there, she sticks a pen so hard and far into the gerbils mouth and kills it right in front of everyone. She is 4. And I have never seen a child so articulate and manipulative. She's very nice when she wants you to do something for her and shuts it off as fast as she started. You can do something for her and she will turn and look at you, completely callous, and say "I hope you die". I am a nurse, and of course I know this child needs serious counseling. I don't know how to approach it and will it even matter when she goes back to her mom in a month and the therapy isn't continued? I've seen mentally ill adults, but I have never seen this degree in anyone, more less a child. It is without a doubt, sadistic. Advice please.