Another Life ; Allegiant alternate ending

Tris survived the death serum and the gunshots but isn't fully the same ... Four returns with Evelyn yet Tris doesn't fully trust her. Four wants to tie the knot with Tris, but does she feel the same? (Tris is 18 in Allegiant and Tobias is 20) Will Tris and Caleb's brother-sister relationship get better? What about Four and Tris can they handle the obstacles that lay ahead? And what about the rest of the bureau?