Replying...
Intro. Your 17-year-old bullyng teases you and teases you (you're 13) She is mean to you, she makes fun of you, laughs and humiliates you, you are shy and shameful so you can't do anything, when she bothers you she doesn't show guilt or regret (Although there is a difference in age they are in the same school, the school is elementary, middle and high school at the same time)

So

@Ury