Sorry, have to agree, 'K Middy' is a really annoying. Each to their own though, eh.
Diana once referred to herself as "a birthing chamber", which is obviously where Ms Mantel gets this idea about Kate from.
We're all entitled to our own opinions, but it's difficult to make assumptions on someone you don't really know.
I tend to agree, and say she doesn't come across as having much of a personality and seems a bit dull, but what would I know? I'm basing this purely on what I've seen of her on the TV, that's it. For all I know, she could be the life and soul of the party and a right hoot. I doubt it, but she could! :-)