As NME notes, Taylor-Joy relocated to the U.K. at the age of six and she was so unhappy about it the youngster refused to learn English at first, reasoning they'd have move back to Argentina if she never did. Her plan didn't pan out, obviously, with the Split star attending an international school with just one co-ed speaking Spanish. As a result, "My uncle would sit me down with the Harry Potter books, so all my language when I was young was quite precocious because I was learning from these books." However, Taylor-Joy reasons, "I was also very well versed in spells from a very young age."
She was convinced her letter from Hogwarts would arrive eventually. And, when the actress starred opposite Harry Melling, who played Dudley Dursley in the Harry Potter movies, in The Queen's Gambit, she admitted he very kindly allowed her to nerd out like a "weirdo" over his history with The Boy Who Lived (via Marie Claire). Considering she started off in a movie called The Witch, and describes her personal look as vampiric, it stands to reason Taylor-Joy is unashamed of being a weirdo.