Perhaps i should have worded it better. There has to be a sense of closure. I don't think its good to just keep her character in limbo. Or to kill her off between Episode 8 and 9. Both sound poor to me. There is a bit of entitlement there. I agree to that. But i don't see any disrespect if someone else steps in to finish the job. She came so far to not see her character cross the finish line. I can see where your opinion is coming from. And i respect that. At the same time i think its best to bring someone for just one film and do it as a tribute.
No specific reason really. She came to my mind when i thought of fantastic actors of her age. And getting the best of the best to do something as a tribute would be better.