Oh, that's really interesting! I'd also wondered why sometimes Zorana gets set to 'Cautious' from visiting Korundi and sometimes not. In my new playthrough I just visited her and she told me to avoid anywhere I might be cornered (I got an assassination at Negative this time as well, so it was probably about that elector) and she didn't get Cautious, so I'd guess the emotion change happens if there are multiple threats? Which makes sense :D