For Kylo’s AI line, I reduced its pitch by a decent amount before giving it to Hal. I wonder if it might have helped to pitch up the line present in the original film to help bring them in line with each other?
For Leia’s saber line, my thinking was that “Rey, never be afraid of who you are” speaks only to the idea that there is an inner darkness in her that she should have the courage to face. Whereas with the added line, it gains a second meaning in that Leia is telling her that she’s a Jedi and she should never doubt that about herself. Which ties in with her modified one-liner to Palpatine: “I am a Jedi”. She’s repeating what Leia directly told her.