Plz help me to get out from this so called bestie💩

Ok let me start like this. So this girl is my childhood so called bestie as we knew each other from the very beginning as our parents worked at the same place, live very closely (still) and also our fam friends. She treated me like 💩 since we were in the primary school. I still can remember those incidents. I always were there for her at any time and still i am. My parents never taught me to do shit to other people. But this bitch is totally d!ck. Our parents sent both of us to the same classes as well. There was a tamil clz that we both attended including one of her friend. So the tacher asked us if we hv passed and our marks. And even before i tell a word that bitch told him that i hv failed in a mocking tone.( she and her frnd has passed) i was literrally shocked and wanted to cry. However the teacher told her that i hv only missed 1 mark and it's ok.

There after also she did such things like whenever her friend is there she ignoring me and mocking me with her frnd and when there's no one she acts so innocent. Everybody thought she is innocent as she looked likethat. Ok all those things apart now. We had our ols very recently. And those days i saw her true colours. Imean i couldn't even believe her. She tried her best to stress me and loose my mind in every possible way. From our young age she scored better than me so our parents always compared us. And still i get compared to her no matter what even if i scored betterthan her in some subjects. Now we are in our ALs and now she again act like she did nothing and stay with me.

So i had a crush on a boy and i told her about it. And she said he's not that good. To be my surprise she stalked him on insta and asked her frnds bout him as they know him. Whatever i didnt care bout that. Till this day they did everything to get use of us and whenever there's an opportunity we share it withthem but they never. I dnt know wht but i'm really stressed rn . I wont be able to get out from her as we lives closed by and our results will coming soon and i dnt knw what will happen.also now she's so jealous of me and she's not even trying to hide it.i always dress betterthan her and back then she was pretty and now itz me so she's so pissed off. She also tells that she doesn't like my style but now she dressexactly like me and even got a haircut like mine. But tbh her sister always admire me.

All i wantad to ask ur help to get rid of her. I'm srry if i waste ur time but really grateful if somebody could help.♡thankz yall♡