Why is my niece so bad?

She hits and screams and fights over and over but nothing we do works. She has fits over the littlest of things. Whats up with her ( shes 3)

O.O

CAS? F*ck them.

Call the police o-o (I hope I haven't said any stupid thing right now )

Shes young and going into adolesence.

she is having to much pressure put on her for a three year old and so she is rebelling the only way she can litghtenv up and let her be a kid

because she is being controlled to much and she is lashings out the only way she can lighten up and let her be a kid. kids dont have to be perfect if they dont say please and thankyou on your terms thats ok just remind them to say it and move on someday they will get it.enjoy them while they are young

I have an 8yr. old little cousin like that only he's horrible twoards me when no1 else is around and act like a little angel around every one else he manipulates every one into thinking I am the bad guy every time I encounter a bully I see his face atached to him he's arrogant,violent,manipulative,perverted,mean,and immature even for an 8yr old, he also flaunts his money and credit cards he does all theese things when he doesent have a good enough reason to do them,he doesen't have to get honnoroll all the time,he has a nice house,a loving family,blessed w/ nice looks,has friends,and loads of money for a boy of his age,compared to me and my brother he lives a life of luxury,but he is still a horrible person,I HATE him so much,my best advice to you is don't SPOIL her ,while she is at her age teach her to be nice,and pray in hopes of her making progress and growing up to be a kind,civilized,and mature young lady