'Perhaps some of the conspiracy theorists can enlighten me.'
Diana was alive after the crash. She died in the ambulance which took so long to get to the hospital where they were taking her.
When Diana wrote about the "car crash" which she had apparently been warned about, it possibly meant that that would be the reason given.
"Diana, Princess of Wales, was so frantic in the minutes after her car crashed in a Paris tunnel that doctors had to restrain her, the inquest into her death has heard.
The Princess was shouting and thrashing her arms around, and pulled out the drip a doctor tried to insert into her arm while she was still trapped in the vehicle.
...
Prof Lienhart said an assistant had to hold the Princess's arm by force to get a drip in but she quickly pulled it out.
"Due to the agitation, the first line, the first drip was removed," he said, speaking by video link from Paris.
"She was agitated, she refused treatment ... he decided to inject some drugs to reduce the agitation, for her to accept treatment."
The inquest also heard that Diana's rare injuries suggested her heart had been thrown violently forward inside her chest when the car crashed in the Pont de l'Alma Tunnel in Paris.
There were no recorded cases of patients with the same injuries arriving at hospital alive, the court was told."
www.telegraph.co.uk/news/uknews/1569774/Princess-Diana-agitated-in-minutes-after-crash.html