Indeed, friends of the Princess suggest that was her aim all along.

“Catherine’s message was so honest,” one pal reportedly told The Sunday Times.
“Isn’t it sad that she has to be so honest and share that because of all the nonsense that has been around?
“I feel like the whole world has been gossiping about her and there is so much bull**** out there about her and her family.
“It was almost desperate that she had to do it.”
Another friend close to the Princess of Wales said that Kate had told the world about her cancer because: “She felt she had to do it”.
They told the Sunday Times: “She felt she had to do it because of who she is. It was more that she knows she is a public figure and has a wider leadership responsibility.
“She also wants to be able to carry on with as active and normal a routine as possible.”
I don’t know about you, but I sincerely hope that the Princess can now make her recovery in relative peace.