[It somehow feels like he's said the wrong thing still, but Vigil nods once more, his earlier gloominess returning despite his efforts to push it down.]

You certainly have, Miss Mikotoba. ...I thank you for telling me about Inspector Gregson and I'll keep your offer in mind, but I don't wish to hold you here any longer.

[He's sure she still has many things to do today. Not to mention, he does wish to return back home and think about stuff on his own.]