[ Elizabeth doesn't hide the frown that forms; but it's not displeasure at Natsuru's answer. Rather, she's thinking about what Natsuru's said. I wonder if they really did disappear... It's something to think about, and Elizabeth flips to another page and makes a note of the question. ]

It's interesting that you came to that conclusion. [ It's not condescending; Elizabeth is genuinely curious. ] There's not enough information to assume they went missing, is there? It could be any number of things, but I'm not absolutely prepared to conclude anything specific happened to them. [ So... ] What do you think happened?