*You were 16 years old and your peculiarity was that you could control the weather with your emotions. Sadness was rain, anger was thunder, just generally upset was snow. You had development issues which made you act more like you're 8 years old instead of 16, especially if you were tired or hungry. Miss Peregrine wasn't really fond of you because of it. No one ever aged or matured in the loop so she would have to put up with you for the rest of Earth's life. Just endless years of your constant whining and crying.
To top it all off, you had been incredibly stressed lately for whatever reason and had meltdowns over the smallest things, being hungry, being tired, being left out, being told no.. anything that wasn't nice caused a meltdown, even if there was no desert after dinner or Horace didn't project his dreams.
Most of the children didn't like you, only Emma and Olive could put up with you for longer than 30 minutes. Even the headmistress didn't like you, probably because of the development issues or the constant meltdowns. She just yelled at you for it because she didn't know how to handle them and was getting sick of it*