Kate Middleton Windsor is a Public Figure.

 Her whole role in the Royal Family is to be a figurehead and create public spectacle, in a good way. Hence the release of the royal Christmas card, the public relations appearances, and the charity attendances.  She is a public figure, and very handsomely rewarded for her public role as a royal.

Be honest about this diagnosis.  Did she have cancer before the latest pushback on her Mothers' Day card "scandal"?  (I'm sorry, but if a person wants to touch up and photoshop their portraits there's no reason to apologize. She should have laughed that one off...)

If she had a hysterectomy, or cysts removed from her royal uterus, be honest!  (even if she would have faced mockery was needing so much "healing" time in the hospital for her "abdominal surgery.") If they though she was cancer free until the biopsy came back, be honest!

I am just very suspicious that it would have taken so long, post surgery, for her to get that cancer diagnosis.  THe public doesn't much like her, internationally, as it seems the finger was pointed as either she or Camilla as the royal that publicly questioned what Harry and his wife's baby skin color might be -- somebody allegedly asked how dark the baby might be...

In recent days, as her star has further fallen, you'd sure hate to think somebody thought a cancer diagnosis and a preventative round of chemo might draw her sympathy, like her father in law.  

Just like the press was all over US Defense Secretary Austin when he tried to keep details of his hospitalization private, as a public figure I do think being honest about your health when you are in such a big public role is part of the job.  The Royal Palace should release more details, not less.  Cancer is nothing to be ashamed of -- she might educate women her generation with an honest campaign about health.

This idea that it is rude to ask details, or that she is deserved some privacy in her public role right now, is ludicrous.  If she wants to be left alone by the press, be forthcoming.  Even if it was a medically necessary abortion she had, I'd say that...