"Theo, stop that. If he's seen Nathaniel, we can tell him later. He's not going to go anywhere, and we can always send Fides to his house." He put a hand on Theo's arm. "I know it's hard, but this is it. You're at war now. You need your control now more than ever." He might not have liked Padma, but he didn't want her dead. Still, they all had dealt with the death of close family members. It was part of war.
"Okay, he's not sick. Do you know why he's pretending?" Draco was trying to think logically when Theo couldn't. "We need you to write down everything, even if you don't think it's important, because you never know when a little detail might prove to be important... and Theo, killing Lisa is not the most important thing, no matter how it feels right now. Taking care of uncle Rodolphus is. No one is safe until we achieve that."