When I saw Rise of Skywalker, I received a very intriguing revelation about Rey. She is the granddaughter and heir of Darth Sidious/Emperor Palpatine! That explains why she is so strong in the Force. Her grandfather was strong enough to fight a Jedi of Yoda’s caliber to a draw. In Legends, Palpatine was a dangerous Force-sensitive even before he received training and he was able to use his natural power to deadly effect when he killed his whole family and their personal guards. That power flows in Rey’s veins.
I like the thought that Rey can use her hereditary Force power for good. Rey has proven that even though evil created her and left its mark on her, evil does not rule her. The end of her story has a delicious sense of irony. The reason for this is because one Palpatine destroyed the Jedi and now another Palpatine will rebuild the Jedi. One way or another, the future of the Jedi Order rests in Rey’s hands. With Darth Sidious gone forever and no longer able to influence her future students, Rey will succeed where Luke Skywalker had failed.
Most significant of all about Rey’s ending is that she renounced her Palpatine name and Sith heritage. She did not let her bloodline define her. Darth Sidious may have been Rey’s blood relative, but he was NEVER her family. The Skywalker family (Luke, Leia, Han, and even Kylo Ren) were collectively the family she never had. Han Solo was both a mentor and father figure for Rey. Not only did Luke and Leia teach Rey the ways of the Force, but they each had their own life lessons to teach her. Luke taught Rey to face her fears and not let her heritage define her while Leia gave Rey a mother’s love and guidance. Kylo Ren/Ben Solo taught Rey to always see the good in everyone even when they are beyond saving. Along with all Jedi who came before her, Anakin Skywalker’s Force ghost encouraged Rey to take a stand against her grandfather, giving her a sense of willpower and perseverance. Rey’s interactions with the Skywalker family helped her become the person she is now. Taking the Skywalker name for herself was not just a way to honor them. It was also a way of Rey acknowledging them as her true family. When the Force ghosts of Luke and Leia appeared to Rey in the end, it was their way of adopting Rey and welcoming her into their family.