Diana is played byElizabeth Debickiin the final season.
The death of their mother is still raw with both of them.
It just didnt happen like that.

Elizabeth Debicki as Princess Diana in the final season of ‘The Crown’Netflix
Of course an aircraft was going to be made available [to bring her body home from France].
The Queen was the first one to agree to that.
Arbiter also debunked scenes involving preparations for Dianas funeral.

Dickie Arbiter, middle, with Princess Diana
I was in charge and media arrangements for that week, he said.
Executive producer Suzanne Mackiesaid: The show might be big and noisy, but were not.
Were thoughtful people and were sensitive people.
There were very careful, long conversations about how we were going to do it.
He has acknowledged that his writing infuses acts of imagination with real-life events.
I dont think its damaged the royals, he explained.
What it has done is people get a sort of jaundiced view of what the characters were actually like.
Netflix declined to comment.