"Maybe there's - a way to corrupting Keltham through Law? Or by learning his Law? That feels like - it should be part of the romance novel - and what I'm thinking in particular, is, we tell Keltham, and we're not in fact lying to him, that one of the Project Lawful girls came up with an interesting theory about dath ilan, though she wants to stay anonymous for now. We copy to Keltham her advance predictions based on Tallandrian Origin Theory, like about the distribution of animals in his world."
"And, if we can zero in to where she's getting those predictions right, we can at some critical point reveal to Keltham her theory - that his world was created by a superbeing, that the Keepers were placed in control all along, and that dath ilan's real masters didn't like his selfishness because that made him less useful to something else's experiment."
"You'd have to time it right, but as a step in his corruption - it feels like that could be Korva's role in the romance novel" which totally doesn't require Keltham to hurt Korva and makes her be valuable as something other than a torture-doll.