With Khet, it's more the absence of anything in particular that gives me that impression. When I first started reading here, I pretty quickly figured out why it was theorized that Khet doesn't care about very much. Phil is a known liar, so his words don't mean shit, but in a way they do, just not intentionally. If Khet had any desire whatsoever to change anything about Phil, that would be pretty noticeable, because he can't help bitching about such things no matter what we figure out because of it. By the absence of that, I don't see much reason to think that Khet is bothered enough by what she experiences of Phil's bad traits.