I can say with confidence that neither the screenplay nor the film suggest that Rey is going to live alone on Tatooine. The track names on the soundtrack were at the discretion of the master himself, John Williams. I can't presume to say what John meant when he titled the piece "A New Home," but I can say that Rey's arc over three films has to do with her finding the belonging she seeks with the new family she's found inside the Resistance. The very last thing Rey would do after all that is to go and live alone in a desert. In our thinking, Rey goes back to Tatooine as a pilgrimage in honor of her two Skywalker masters. Leia's childhood home, Alderaan, no longer exists, but Luke's childhood home, Tatooine, does. Rey brings the sabers there to honor the Skywalker twins by laying them to rest -- together, finally -- where it all began. The farthest planet from the bright center of the universe, but a beautiful and peaceful place to bury two sacred objects.
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