So my sister is 6 and she’s always very violent whenever I go her house to see her. She will just come over to me and for no reason slap me across the face or bite me she always jumps on me and rips my hair out and she will constantly go behind me where I can’t see her and then hit me at the back of the head with like a heavy metal toy truck she kicks and punches me everywhere She has given me black eyes and bursted my nose before but she never learns she finds it hilarious to hit people and even when you shout at her and tell her it’s wrong she just laughs and continues to do it. I’ve even been asleep and woke up to her repeatedly headbutting me with her hands around my throat. Starting to think she is legit the anti-Christ what could be wrong with her??