[ ] Create an Ellie like child character that is dependent on the main character.
[ ] Should tag along (follow mechanics) with the main character.
[ ] Could have some assignable mission.
[ ] Could make things interesting by using the smaller form of the child to navigate certain parts of the map. For example, we can use her to shimmy through a small hole in a wall to unlock a door from the other side. (quick idea for cut-scene: alien could be in the other room and the child is alone with it while the parent watches through the hole in the wall and tries to guide them to make the correct choices. Could lead to a tense scene and help for character development and development of their relationship from the player's PoV.)