[Fuu's face flushes in embarrassment - she prides herself on being an excellent student, and being told that she is only marginally correct (even on something she'd not known anything about before now), makes her want to find the fully correct answer.

However that thread of thought is set aside for a moment in the face of Mister Ferran's conversation. Her skin prickles at the thought that he had been spying on her - on everyone! - for so long. Perhaps he had even been to Cephiro.

Can he see her emotional vulnerabilities even now? Is he feasting upon her emotions? Perhaps his disappointment was something to play into that? She takes a breath to calm herself.]

So, you set everything up and you have observed our emotions for three years. You now know how we react to a... variety of situations. Why are we still here?

[It rather sounds like his original intention for the research- continuing his ancestor's work- has fallen by the wayside.]