Oh. Just...wow. You've just given us a reason why Remus is the way he is--so polite, and distant. In this it seems the Prank really was a watershed moment for Remus, even though he knows (intellectually) it wasn't about him.

The nausea is also there, but Remus knows it isn’t because of the transformation anymore. He will learn to control it, just as he has learned to control his breathing and his homework and the ache in his limbs. He can learn to say nice things to people, and make himself look harmless, and useful, and good to have around, so he won’t have to depend on his friends. He knows how to learn.

Ouch. Just heartbreaking. And wonderful.