[RUDE??? After about a minute of this, he gives up and looks up again.]

That is really all I can tell you, Your Benevolence. I'm sorry. [But she's probably still worried, so... hmm. What would a Good Older Brother (TM) do?] In the meantime, would you like to do something together? Perhaps we can go for an evening stroll.

[If Dhurke not being around the house is what's making her antsy, maybe getting her out for a little while will help.]