In that case, i always quote the late Duchess of Devonshire :
"How strange it is, this adoration and beatification of the princess. If only they knew. It just shows how humans must have an icon and there she was, beautiful, elegant and charming and quite extraordinary with ill and old people - I've seen her at work and it was a case of touching the hem, almost unbelieveable. BUT "they" have no idea of the other side".
The fact is that there will always a gap between the public and the private perception of the Princess of Wales. I guess HM knew both and maybe thought that it was useless to decorate someone who, apparently at least, didn't care anymore about the royal decorum (and at one point was very vocal about it).
The sad thing is that, on the contrary, Diana would have maybe felt encouraged in her position by receiving, for exemple, the RVO.
Another exemple of deep misunderstanding from both parties in that long, long story.
That type of thing is the very definition of Diana’s relationship with her husband and her in laws. It was a bad cycle that just went on and on.