I think I may have missed something in the IC thread - specifically, what the group knows of Zarovich, if anything.
Khensu, and Marot up to recently, had been guarding the road to the castle, so the party must feel that there is a threat of some kind from the castle, where Zarovich resides.
The fact that Zarovich visits Ireena's home, but doesn't show his face in the town vexes me somewhat. Normally, one would think the local 'lord' would visit with and thank the people who put an end to a plague that was killing off his people.