I don’t think he ever IDs her in his convo? I was having trouble at first and the reason was due to my princess not having figured out the way the actual murder was done and then not knowing where to find the evil for the murder weapon
Viewing post in Bug Reports and Errors
The Kade scene for mystery hunting requires:
first passing a 60 courage or 80 manipulation check ---- > correctly answering his questions --- knowing the correct reason the servant was killed (requires figuring out a certain persons plot against you) ----- > correctly guessing Kade's motivation ----- >correctly guessing the method of murder / and three other correct theories of what might have happened (wrong guesses will work against your total score here) --- then passing an interpersonal insight or persuasion check
if you have done all those then you unlock his confession scene
hope that helps <3