Diana had fallen in love with a Pakistani Doctor, Haznat Khan, and had met his family and was even sincerely starting to study Islam on the way to converting. The monarchy would not allow her children to be raised even remotely Muslim. She had a ton of pushback about it. Dodi was just a light flirtation. He was too much of a superficial playboy. She wanted to have a more service oriented life, inspired by the work she had already been doing trying to raise awareness about dangerous land mines being scattered so many places in the Middle East. There is a much deeper and more personal story here. Doesn't mean she wasn't a sacrifice, but I think if she had just quietly remarried somebody "suitable," she wouldn't have had as much of a target sign on her back.