Blame game

Last year someone told on me for something and I got a Saturday detention and so did she on the same day, whenever she tells on me she lies about it and I get in trouble, but when I told my dad he told the principal about it and she got In trouble. Her group sees me all the time and it's not like 5 people it's like 15+ people because they all gossip about me and stir the pot. I don't know how to face them. My dad knows it's a blame game and the school doesn't listen to me. I feel like everybody's against me and I can't help it. People stare at me in the halls, people purposely bump into me, they'll smirk at me, etc

My family tells me to ignore it but it's hard when it's like a classroom full of people doing it.

I don't wanna face her or be in the same room as her for detention. And I can't schedule it another day.

My parents to me I have detention not the school. My parents told me this last night. I don't know if the schools gonna call me in or anything.