Harry Potter 5 book quotes?

Question:

Harry Potter 5 book quotes?

I dont undertsand these qoutes by Ron and Hermione.

"Hermione, you are honestly the most wonderful person I've ever met," said Ron weakly, "and if I'm ever rude to you again-"
"-I'll know you're back to normal," said Hermione.

what does she mean back to normal?

Best Answer - Chosen by Asker: He's acting nice so when he says if I'm ever rude to you again she says I'll you're back to normal because normally he's rude to her. He's really tired (I think this iis the right part) and she helps if with his homework so he's really grateful which is not normal for ron at all.