What the hell is her problem?

so last year i was new at my school so i didn't no sh!% so i started hanging out with these "popular" kids they were sooo mean and rude they weren't my freinds they had to make fun of me like pull my hair push me call me ugly make fun of my house (which was bigger than both there houses) they thought they were so cool im not racist or any thing but one of these girls is a chinese chick thats ugly and has a really strict mom so she just acted cool in school. ok but now im super popular they all know i know a lot of people in each grade (im in 6th grade) and im friends with them so now the chinese girl started being sooo nice to me just cause im popular she doesnt talk to the other chick cause that girl was only freinds with her for 1 year so this girl (meg the one who was mean) started to follow me like i was talking to my real freinds that are nice to me and popular and she just randomly came next to me and started to laugh she didnt even no what we were talking about unlike her im not going to tell her to go away like she did every time i talked to her so what do i tell her i really do not want to be friends with her after what she did. and today i was talking to my "popular" friends and she comes in and sits in the middle of me and my bf max and morgan i got like pissed at her wtf no one likes you it got quiet and i left i let it slide but ugh last year you were a jerk and never let me hang out with your little group but i don't want to hurt her feelings like in gym we have to pick partners i got with my new friends and she trys to squize in but to many people i hate her but i hate wene i make people feel bad...