My sister always gets under my skin and annoys me lies about me then she says sorry we make up and she will be nice for a couple days my parents always see me as the bad one she is not super smart so she gets away with bs on her report card but I have to have straight as and a+s no a- or below no way!! She is always calling me anorexic and I'm not I'm just skinny and I eat my parents know that but don't stop her so when I call er fat I get in so much trouble an my mom just tells me to let her insult me cuz she's so insecure so I do and yesterday my mom left us at home so she could run errands and she told us to clean so I did the dishes and she did the table we were fine and then she starts squealing and how I'm going to my room for a sec I Sai ok when my parents came home my mom started yelling at us about what was going on and I was just confused my sister had apparently old my mom I yelled at her and dig my nails into her arm which had these huge nail marks I kept telling them I didn't touch her but they wouldn't buy it then my mom started crying that she must be a horrible mother cuz her children are liars I wrote her a long note saying I was sorry about her feelings she told me she appreciated it but is still upset that my sister and I keep lying and she doesn't know who to believe my sister scratched her own arm I didn't touch her Wht can I do!!!!!!!