I felt for Will, when he found out his brother was a Marquess. I can't imagine how much it would hurt to think that your brother who should be on your side against the world as it calls you a "son of sin" and a bastard is a legitimate heir and a peer besides. Not only that but Xander is knighted. Sure it's not by a very popular prince/king but still.
Helen, er, Marianne, was both brave and foolish. Brave to do what she had to for her mother, but foolish for ignoring Will who had more experience in the kind of thing they were trying to do. And Will was infuriating, although his choice of torture? Miss Yeeld and Lord Thrustsome - hilarious!