She is a focal point for good will. I watched the documentary including her various private reels of film. Her voiceover was very interesting and, I thought, revealing. The world has more people of good will and kindness but we don't tend to hear much about this. She obviously appreciates this and strives to encourage it. She is a great encourager. I don't mean pat on the head stuff although I'm sure you'll reframe this as that. Her attention and interest in people over the years and all over the world has made people feel better. That's not a bad thing.
Her long term experience of 14 prime ministers is pretty useful too.
Looking for another heartbreakingly beautiful novel

