Luke: “She was quick to learn in our training. But Leia was afraid of succumbing to the same darkness that consumed our father, choosing instead to follow our mother’s path. Despite losing everything and everyone, Leia never wavered, and always chose compassion. A thousand generations live in you now, but this is your fight. Let Leia’s legacy guide you on Exegol.”

I threw @JarJar’s in ChatGPT with a prompt of “make this sound more natural” and then made some further tweaks. I think it reads a little better, but up to Hal!

EDIT: (to make it even shorter, if needed)
Luke: “She was quick to learn in our training. But Leia feared the hatred that consumed our father, choosing instead to follow our mother’s path. Despite losing everything and everyone, Leia always chose compassion. A thousand generations live in you now, but this is your fight. Let Leia’s legacy guide you on Exegol.”