Who Princess Diana inspire?

When she was a teenager,her sister,Sarah inspired her,she found in her maturity.Lately,when she got married,as she said ''I was too frightened to do any move,so I was stuck in whatever Charles did'',Charles was gave her inspiration too.When Prince Andre (Charles's brother) married with Sarah (another Sarah,not Diana's sister).Diana realized that Sarah,Duchess of York was full of confidence,not shy like her,Sarah did things in her way,Diana followed the royal rules,Sarah was in very good relations with the press,Diana was a victim,Sarah was relaxed in the royal family,Diana felt that she's not good enough,Sarah's husband was nice with her,Charles ignored Diana and made her suffering from bulimia...COMPLICATED...That's why Di saw in Sarah,the Duchess,a role model