It only encourages Mikhail to keep up the conversation - at least until the squeaking starts. This startles him and the little boy looks scared.

Ciel's reaction is more outgoing, as usual. She makes a few loud comments, trying to be heard over the squeaking. Whether she's just making more noise or trying to cheer Ben on in rescuing the tribble is hard to say.

((And yeah, these two are going to need journals. Or a shared one))