DominicCobb said:
Rian made the tough but absolutely respectable decision to keep Fisher’s work in tact. Considering as I said, Luke refutes the statement, there’s nothing about Leia’s brief doubt that ruins a perfectly fitting last scene for the pair.

I agree. I think that’s one of the strongest, if not the strongest passages in the film. I took his “no one’s ever really gone” to mean no one is ever really gone because they live on in your memories of them. They live on in the way they were part of your journey. He says that as he’s giving her Han’s lucky dice. She must also have some fond memories of her son and he lives on that way, a pleasant way.