I'm an aunt to a little five year old niece who I love dearly but I knew at 6 months old something was not right when my niece scratched the heck out of my right cheek then bit my husband in the face, since then she has been hitting biting scratching slapping people across the face, she is abusive to her mother, it has been 5 years till the date she was born and she is ferocious , my sister recently had another baby girl a year ago and she just turned 1 yesterday ,she is also abused by her big sister as well, my first niece has walked up to her mother & sister & poured a cup of juice over her mothers head, my own daughter who is very close to her has also witnessed this abuse as my niece has threw a hard cover book at her head & has also pinched her and walked right up to her and slapped her in the face , my daughter is 18 and so she slapped her right back and my niece then slapped her again in the face and my daughter slapped her again the my niece finally cried and ran off, my daughter does not usually hit at all but she wanted her to see that she should not hit other people , however that is nothing compared to her slapping nurses in the hospital and biting kids, and it scares me because we have taken her to the play ground and kids her own age walk up to her and say your a monster one girl said your not normal something is wrong with you to my niece, that worries me because i wonder if the kids can sense something wrong with her, she is so out of hand with strange behavior she talks to her hand all the time or talks to her self in the mirror , her mother gets attacked all the time, when she gets angry she hisses and growls and shows her teeth, she had an accident at my house because i was not aware that she did not know to not to touch candles, and she touch the flame for a second and i felt terrible, my sister was sitting right there and never warned me about child proofing my house, i thought at five she would know not to touch candles however she burnt her finger and started growling and hissing at my candle, i love my niece but this girl hits hard and today was the final straw - my sister becky another sister with no kids went shopping with my sister and her two girls and of course my niece belted my sister becky in the face and that was it she went home mad as anything,I'm at a loss as my sister has not taken her to a Doctor yet to get help and I know something has to be wrong with her, I'm not sure if this means anything or not but from the time my sister was 5 till 18 she was attacked or haunted by something at home, i hope some one might be able to give us any info or any ideas as to what might be happening here,