The Splendour wore off sometime while the second Nefreti was talking, and Keltham's emotions feel diminished, now, by comparison, along with the drive that was holding them in check.  It's not really challenging some of his earlier sense that messing with your 'mental attributes' is not really all that safe for people who want to keep their personalities intact, especially if you flip them up and down again on a daily basis.

"You want to swear to me about how you're bound by Cheliax's agreement not to interfere with my attempts to leave nor buy passage, and that my telling you what I'm doing won't hinder my goals as I currently see them?"

The Splendour wore off sometime while the second Nefreti was talking, and Keltham's emotions feel diminished, now, by comparison, along with the drive that was holding them in check.  It's not really challenging some of his earlier sense that messing with your 'mental attributes' is not all that safe for people who want to keep their personalities intact, especially if you raise and lower them on a daily basis.

"You want to swear to me about how you're bound by Cheliax's agreement not to interfere with my attempts to leave nor buy passage, and that my telling you what I'm doing won't hinder my goals as I currently see them?"