You have to have read Allegiant. It's been 100 years since the factions were destroyed. Now, they've come back. Factions: Lion, Sharp. Factionless are basically Amity. New characters, new lives. Meet Caleb and Tobias's descendants! All the characters are made up. Wouldn't make sense if Tris was alive right now, would it? Sequel just adds more chapters to this.

Don't lie. You weren't satisfied with the ending of Allegiant. In this version, Tris survives. I'm not sure I want to make a complete story of after this. I like the ending with a happy note and peace. This is a short 1 chapter story.