We all know that Princess Diana may not always have seen eye to eye with her mother-in-law but a much less talked about relationship is that with her formidable stepmother Raine Spencer, who rose from humble origins with the help of her larger-than-life mother, the novelist Barbara Cartland, to become a countess and a member of the royal family. Raine was a divisive figure, who was doted on by her husband Johnnie Spencer but loathed by Diana and her siblings. Yet as the princess's marriage collapsed, she reached out to her stepmother for support, marking a change in the women's relationship.