But Palpatine is only ever claiming her and Anakin as his own because he may or may not have done a Build-a-Bear while the Force was making them, choosing what “pieces” to add. The argument is whether that makes them entirely his or not. I really think Luke needs to disavow this notion, since they are autonomous people who can decide these things for themselves.

I’ve already explained the destiny side of things through the dyad. I’m not sure it’s a good idea to suggest a person can overcome that alone, as Anakin’s story proves otherwise. I think the idea that strong connections through the Force can break fate and foresight lines up nicely within the saga. Palpatine never saw Vader betraying him in his last moments because it was spurred by the love between a father and son. And Rey is stopped from striking down Palpatine and fulfilling her destiny because her and Ben share a more romantic love.