Lily allowed herself to giggle just a little, but only because no one was paying attention to her. It might be picked up by Al's magic parchment, but she'd explain if she had to.
"There will be no blood on my new carpet," she announced, giving them all a stern look--another one she'd stolen off McGonagall back at Hogwarts. Merlin, sometimes she really missed her former Head of House.
"If you insist upon bloodshed, you'd better take it outside. Al and I will enjoy the cobbler all by ourselves in that case."