As the war goes to the next level, there are some secrets that are brought to the ground and the realities just stun everyone. The new discoveries are not pleasant for anyone and there was a reason that those issues were kept buried for such a long time.
Veronica Roth has created Divergent and Allegiant for the fans too if they get interested in the concept. There is no one who would leave the series incomplete after listening to this second part. All the parts and narrated by Emma Galvin and she has given an exact pitch to this episode as well. Tris will evolve at the end of the story so wait for it with hope in mind.