Why is my sister so mean to me?!?

Dont worry she is going threw what everybody does when they are small they change bcz of the ppl around her at skool or maybe bcz she wants to be more grown up but it wont last forever she is going to know soonder or later that she is doing wrong you could try helping her but she is goin to get over with that by herself dont worry its temperary ok just wait and just keep on being the good role model u r :)