my sis crashed out on me because I called kpop trash, AITAH?

So I (14M) was at a friend's house (15M) along w my sister (14F) where we kept on teasing her because she made kpop content and we told her to stop making kpop content as it is cringe and maybe try different stuff. She says nothing at that time and just hangs out as usual, when we finally reach home, she instantly goes to her mom (we're cousins, at vacation rn) and mine and cries because we called kpop cringe which led to everyone getting mad at me and lecturing me, so AITAH?