Here’s another slightly different draft. I think going into the force reaction aspect is a little confusing, and I’d rather spend those lines on drawing the connections between Rey and Kylo.
"I pushed you in the desert because I needed to see it… I needed you to see it… who you are. The dark side is your birthright, Rey…”
“You’re lying.”
“I’d never lie to you. Your parents were no one. Junk traders with a child they never expected.”
“Don’t!”
“But they had no part in your conception…”
“I don’t want this!”
“…just like Vader.”
“No!”
“You’ve seen it, haven’t you? Your destiny.”
(Rey sees the vision of herself on the Sith throne)
“Your parents sold you because they were afraid of you…”
“Stop talking.”
“The same way Luke was afraid of me.”
(Cutaway to heroes capture)
“The force showed me glimpses of you long before we met. When we fought for the first time, in the forest, the power inside of you awakened. You revealed yourself not only to me, but to the Emperor… just as he’d intended.”
(Visions of Rey beating Kylo on Starkiller, falling into the dark cave, etc.)
“No!”
(A pedestal shatters and the mask of Vader falls to the ground)
“So that’s where you are.”
“Our fates have always been intertwined."
“No…”
"I’ll tell you why.”
—
“Palpatine told me the rest of our story.”
“Tell me.”
"He influenced the Force itself into creating life. First my grandfather, and then you. You were The Emperor’s chosen heir. You… are a rightful Palpatine.”
"The Emperor wants us to fight each other, so his most worthy heir can claim the throne. But he hasn’t realized the strength of our connection, Rey… a bond, not of blood, but of raw power in the Force. We can end him and the Sith, and create a new order, together…”