stupid girl at school! i need help!!! and really faaast!!!!!

ok i missed one 日 of school and that is when every student in my class is being interviewed 由 the police because someone tried to burn down the school because they thing muslim kids are being trained to bomb places. anyway that isnt the main problem this 婊子, 子 at school started saying things behind my back like "that stupid secretary" (i beat her at the elections) and alot of other mean stuff i dont remember but my bff told me about it and i am crying so much, i feel so angry and hurt. what should i do when i go baCK to school tomorrow and i only have a couple of hours until i have to go to 床, 床上 so someone PLZZZ help me i REALLY need advice!!!!!!