In other words, make the climax of the film be an internal character struggle with a foundation on previous established themes, rather than an external blackmail…thing.
How is the “dark side” a theme? Confronting fear is a theme. “Confronting fear is the destiny of a Jedi.”
Rey has found her belonging in her friends in the Resistance. She is scared of herself, that she won’t be good enough, and that she will hurt those friends either physically or emotionally. So it makes perfect sense that Palps would use that against her to try and turn her to the dark side. And as I said previously, it is one of the overall themes of the saga itself. Doing stupid stuff to save those closest to you. Obviously the correct thing to do would be to let go of that fear, and not give in to it. In Rey’s case, to deny Palpatine and force him to attack, which would justify her attacking back.