I couldn't agree with you more Margot - the way the Duchess (and let's not forget The Duke as well) of Kent have handled their private lives and its various challenges is astonishing and remarkable.
I mean - just look at the list. Here we have a royal couple with a medically necessary abortion, a miscarriage, decades of medical issues and depression, a religious conversion away from the kingdom's established church, and a marriage that for all practical purposes has ceased.
Any one of these developments could have risen to the level of crisis for the royal family. All of them combined? Could have been a disaster of Charles/Diana or Andrew/Sarah proportions. And yet none of it undermined the dignity of the crown or royal family, embarrassed the Queen, or become torrid tabloid fare.
That can be due solely to the personal strength, self-control and discretion of this particularly royal couple.