I like the idea of Leia saying something more significant to him. In response to him saying “You can’t go back to her now. Like I can’t,” could she maybe say “Come home” or “Come back.” She has some lines in TFA to Han that might work as a base - “Bring him home,” “I want him back.”

And it might flow a little better with a bit of a pause there. Maybe she could say the second part as she’s lying down?

Also, was the plan for the end of this fight, with the crackly saber, still to have Rey’s short out right before Kylo prepares his final swing? Because that’s going to look awesome if so, and it’ll explain why she doesn’t raise the saber to block again.