Well, first off, both your BK installation
and Trait King mod are outdated.
Second, I checked and both Neesa and Fanti are not interested in sex (preferences at -501 and -383, respectively). So if you have the text displayed in yellow, it's at most a visual bug.
Third, couldn't reproduce the yellow text issue myself. See attached screenshots.
Fourth, if 'fired Vara Kona' means not selling her on the market, I'm afraid I can't access her any more. So what was up with her, if anything, I can't tell.
Fifth, I see 'Teaser' on all three of the problem girls, which looks a little suspicious. But giving that same perk to others changed nothing, so that's likely not it.
Sixth, does 'remove negative trait' mean 'remove negative
fixation', or are you referring to some cheat?
Seventh, your save is quite sizeable and advanced. I'm not surprised some hiccups - like buttons losing responsiveness over an extended game session - might happen; Ren'Py isn't all that happy about constantly chugging all this data.
I suspect you might have kept the same save through several versions as well, which could lead to more hidden issues. Or maybe it won't, who knows?
BTW, have you tried the 'refresh_memory_on_home_screen' option in BKSettings.rpy? Might help a little.
Eighth, you're running Trait King, and (I hope) we all know about _neronero's exemplary ability to produce cute little bugs in all kinds of nooks and crannies.
All in all, I suggest upgrading to the most recent versions, trying again and showing a screenshot with improperly yellow text as well. Because we're obviously not running the exact same code here.