Out of control sister please help
My sister is twelve and she is out of control,she dominears my mother,breaks up the house,and is very verbally abusive towards her.I don't know what to do,I'm 21 and I moved out a long time ago because me and my mother didn't get along ( long story,she had a drinking problem,I was sick of it) so I left,anyway she cleaned her act up and hardly drinks now(mainly because if she does my sister will go crazy at her)but my younger sister is out of control,and she treats the house like crap,when she doesn't get her way,she will smash and break things,she'll curse constantly and she always fights with my smaller sister who's 9.. I feel guilty because if I were there maybe she wouldn't have gotten so "out of hand" her father doesn't live with us,and contacting him is not an option,either is me moving back in an option.I just really want to know how she can get help and stop all this anger that's in her,my mam is lost for help and depressed over the whole thing,she lets both of them walk all over her,and whenever I go out to see them I have to " take charge" they treat her like crap and I'm sick of it!My mam thinks sarah(the twelve year old) might need concilling to help her,but she doesn't know who to turn to or talk to about it,can anyone help me ? It would be very helpful if you could point me in the right direction of someone who might be able to sort my sister out,I'm beginning to hate her and the way she treats my mam.should my mam consult a doctor about her behavior?