J.K. Rowling apologized for killing off Dobby in Harry Potter and the Deathly Hallows. She shouldn't. The house-elf's character came to his logical conclusion. It was the right time for him to meet his end.
J.K. Rowling seems to regret killing off her 'Harry Potter' characters - The Boston Globe
yet another reason to sob over Dobby's death : r/harrypotter
Maybe J.K. Rowling Should Just Rewrite The Entire 'Harry Potter' Series
Harry Potter and the Deathly Hallows - Wikipedia
JK Rowling apologises for Dobby's death on Battle of Hogwarts anniversary – The Irish News
Harry Potter author JK Rowling finally apologises for killing Dobby
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Harry Potter: JK Rowling apologises for killing off Dobby, Films, Entertainment
J.K. Rowling apologizes to fans for killing Dobby in 'Harry Potter
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SPOILER ALERT: JK Rowling apologises after killing off key Harry Potter character
Harry Potter': J.K. Rowling Was Right to Kill Off Dobby