Behind the scene she sought to protect her inherited and ill-gotten wealth by getting both Labour and Conservative governments to change the law to shield scrutiny of her investments. There would be honour in giving away at least some of 'her' wealth when the entire nation is in crisis but that of course need crosse the mind.
She protected her pedophile son and the pedophile Lord Mountbatten, while turning a blind eye to Charles' relationship with Camilla and permitting Diana to be used ... so not clear about her 'duty and honour' being anything but self-serving.
I am not fascinated by Harry and Meghan but glad they are standing up to the forces that Diane predicted would destroy her.