Harry's cousin has changed gender, is a time-traveling woman, and has a black vagina.
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When the owl came to the Dursleys carrying the Hogwarts admission letter, Aunt Petunia fainted in front of Harry.
Cousin Dally turns out... To be a wizard, and he's not the only monster!
"You don't think I'll let my mother be afraid of me, do you?" Cousin Dally stared at Harry, "Be good, Harry, and don't cause trouble while I'm at school."
He understands very well how powerful his cousin is.
Then, 10-year-old Harry Potter's treatment at the Dursleys suddenly improved. (Congratulations)