The 62-year-old older sibling made a shocking revelation, describing Diana as a “religious” seatbelt wearer and still questions to this day why her sister hadn’t been wearing one on the night of the fatal crash.
Lady Sarah said: “She was religious in putting on her seatbelt. Why didn’t she put it on that night? I’ll never know.”
Speaking of the moment she was told of her sister’s passing, Lady Sarah explained that she became furious that the TV news channels were still reporting that she was alive.
She continued: “There was a period of about two hours and I was talking obviously to members of my own family and learned that she hadn’t made it.
“For these two hours, the presenters on every news channel were saying “injured but expected to make a full recovery”, and I have no idea why but it made me so angry.”
Making the journey to recover Diana’s body from France and return her to the UK, Lady Sarah told how she was bereft of emotion and decided to only point the finger once her job of organising the funeral was over.
She added: “I think I felt shock, but I don’t think I felt anything else. Just love and shock.
“I don’t think I was capable of feeling anything because I put a barrier up. These are the jobs that have got to be done and just get on with them.
“There’s time enough afterwards to point fingers or whatever else you needed to do.”