After reading through most of what's been translated beyond what's on this site, there's just a certain point where you have to start asking why the various villains don't just give up, cut their losses, and use their connections with the protagonist to ride her coattails toward success?
I know it would basically end the story, but you'd think that after a while it would occur to them that having a family member as the 9th princes' consort and being on good terms with those two will probably open more doors in the future for everyone else, instead of playing an endless series of plots that keep backfiring on them. I feel like I'm either missing something here that makes that not a viable option, or these people are terminally insane. It makes no sense to me how 'deliberately antagonize the fiance of a guy who burns palaces for fun' seems like a good idea, and there's a stupendous amount of doublethink in some of the characters' motivations: somehow the 9th prince is both too good for the protagonist (making her a target of jealousy), but he's also not good enough to try getting in her good graces, and she gets insulted because the guy's crippled. These people need to pick a reason and stick with it.
It also amazes me that some of these antagonists manage to keep recurring in various courtly contexts, given that the more spectacular plot backfires are presented as having some real significance or being social suicide, but no - they just keep showing back up at every party the protagonist attends, trying to mess with her again, despite having lost enough 'face' to sink the Titanic. At this point, it feels like no ground gained or lost is ever going to be permanent, and the story's basically just spinning its wheels through the same plot to discredit/kill/shame protagonist -> protagonist and/or princes turn the plot on them instead -> rinse and repeat.