Sebastian smiles, but there's an sense of long held frustration behind it. "I happen to think Beatrice is perfect sweet and charming, but I know that's not the prevailing opinion back home. It's a, well, it's not so much a faux pas to have a patronus that's not a cuddly animal, but there's always the sense that if it's not a gentle creature, it's a spell left uncast."

Which is, of course, utter nonsense.