Here’s the current status of the Ahch-To dialogue:
R: “I saw myself on the dark throne. I won’t let it happen. I’m doing what you did.”
L: “I was wrong. Pushing Ben toward that throne was my greatest fear. What are you most afraid of?”
R: “Myself.”
L: “Because you’re a Palpatine? Nobody can claim those the Force made. Only you can choose your belonging. Some things are stronger than blood. Confronting fear is the destiny of a Jedi. Your destiny. If you don’t face Palpatine, it will mean the end of the Jedi. And the war will be lost… There’s something my sister would want you to have.”
R: “Leia’s saber.”
L: “She was quick to learn in our training. But Leia feared the darkness in our father, choosing instead to follow our mother’s path. She surrendered her saber to me, and said it would be picked up again, by somebody with the spirit to face that darkness. A thousand generations live in you now, but this is your fight. You will restore balance.”
R: “I can’t get there. I don’t have the Wayfinder. I destroyed Ren’s ship.”
L: “You have everything you need.”
EDIT: An alternative to make things less ambiguous would be:
“Because you’re a Palpatine? The Force chose you, Rey, just as it chose my father. To bring balance to the Force. Some things are stronger than blood…”
But then there’s less character agency and it’s not clear if the Force alone made them (although maybe the second part is a good thing, I’m not sure).