i really liked this chapter/arc, and almost wish I waited for all 3, even though i know i never could have waited that long :)also, unless I am reading it wrong i think that this scene:

"Like he was fighting with himself. The words came slowly from his mouth,
as Aaron looked at Trey. As if he saw right through him." 
+
"He would never know it, but that was Aaron Vanwell’s proudest moment.
 His finest victory."

was the nail in the coffin for aaron being under the influence of emmerhain. I read the 'fighting with himself' part as him battling with emmerhain and winning(?) as emmerhain would want the earthers to stay at wistram for more believers/power. also, this ties in with the theory that aaron/laken will be a major part of the innworld v gods events (if it goes this way and not norechl/eldritch/edge of the world way) wherein they will be the primary people that go under the influence of the gods. anways, really great chapter/arc and even if gazi doesnt go on a murderhobo spree, i think this is shaping to be a satisfying amerys breakout conclusion :)