Hi! Can't go to the specifics as the author discourages guides and such to fully experience the game. But the way it works is to get to know the RO, basically respect their boundaries, and fulfill your role as the Crown thst mostly aligns with how the RO views it.
For D, what mostly works is to choose options that respect their sense of duty, but with a balance of showing interest beyond them being your general. I hope you find this helpful, even though it's vague.