I hate my sister! im only 12 and she literaly is ruining my life?

hiya, all siblings are like that.you need to hit her once really hard,it will shock her,so she will b e scared to touch you again,in case you hurt her.it only takes 1 hard slap.but you have to warn her first,if she does not leave you alone then hit her.tell your mum that you have tried to tell your mum what she as been doing to you,but you don't do any think about her,so im not a punch bag for her to knock me around,so that is why i hit her,and will do it again if she hits me again.your mum will have to tell her of,and your sister will think twice before she picks on you again.xx