Thanks to Bookriot, I learned that Beth Revis wrote a novella prequel to Across the Universe, which is my favorite YA dystopian trilogy as a whole (Meaning, each book was great and the last one didn't fall off the rails like The Hunger Games, Divergent, The Maze Runner, Matched, etc etc etc - all fantastic, all they all fall apart IMHO.) As They Slip Away was a rather melancholy story of one of the peripheral characters and how she chose to become a drone on Godspeed (the spaceship where the story takes place). If you have 30 minutes and read this series, it's worth checking out.