I am currently writing a story about a girl who gets in a car crash only to wake up in a science lab hooked up to a machine. She is told her entire life as she knows it was an illusion created by the machine. She is told by other scientists that she was the maker of the machine and wanted to test it out on herself but it ended up wiping her memory. Throughout the story she will meet other people who each claim she is someone else. The main character will end up with 4 identities (before car crash, scientist, rebel leader, and orphan girl who disappeared from her village). The story is her journey to find out which identity is really hers as she tries to survive in a corrupt dystopian world. All four identities are the same girl and she doesn't flip between them like multiple personality disorder. That would make their character traits and personalities mostly the same but I also want each identify to be unique in its own way. Any ideas on how to make them blur together but still be slightly unique? Also any ideas on how to smoothly transition between them?