Guido Reni Angel of the Annunciation painting

Wish that would happen with me and Lavender," said Ron gloomily, watching Hermione silently tapping each of his mis-spelled words with the end of her wand, so that they corrected themselves on the page. "But the more I hint I want to finish it, the tighter she holds on. It's like going out with the giant squid."
"There," said Hermione, some twenty minutes later, handing back Ron's essay.
"Thanks a million," said Ron. "Can I borrow your quill for the conclusion?" Harry, who had found nothing useful in the Half-Blood Prince's notes so far, looked around; the three of them were now the only ones left in the common room, Seamus having just gone up to bed cursing Snape and his essay. The only sounds were the crackling of the fire and Ron scratching out one last paragraph on dementors using Hermione's quill. Harry had just closed the Half-Blood Prince's book, yawning, when —