It is not given in the books of the Harry Potter series, but Hermione likely started menstruating in her second or third year at Hogwarts. For certain, though, we know she had started by her mid-twenties, when she got pregnant with her and Ron's two children, Rose and Hugo.
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Hermione refused to eat the feast once she learned that the house-elves who made the feast were slaves.
Hermione and Ron's relationship in the beginning started out with them arguing and hating each other, but in the movie Goblet of Fire Ron starts to have feelings for hermione and they start to live with each other in Ron's house in the Half Blood prince and then they get married in the Deathly Hallows pt 2
Hermione Granger is Harry's very smart friend. She often checks his homework! LOL
Hermione Jean Granger
Hermione Cockburn was born in 1973.