How can i kill someone with kindness?

[yadira]

I was at school i was sick i had drink some tablets and those tablets made me starv and gassy so we were in PE doing sit-ups and i couldnt resist so all of a sudden i farted a little but at the same time my shoe made a similiar noise and a girl farted a the same time wich made it louder so they blamed me for all of it i couldnt help it i was sick and since then a girl makes fun of me but she never tells me in my face she only does behind my back so she makes me look bad in front of people mostly the people that are starting to be my friends she thinks shes perfect but shes not everyone makes mistakes nobodys perfect but a lot of people do worst things than me but she only makes fun of me for that incident so help what should i do