Kate is not someone to be messed with
Kate’s family is not to be messed with. Do you know how hard Carole worked for this 
Tbh the way it’s getting front page press points to someone in a certain kind of knowledgeable position. If I were a betting woman, I’d say it came from the Middleton side as a warning to William.
Rose wouldn’t want to see herself in the press like this, and William doesn’t deign to work with the press. Not sure Haz and Meg would be in the position to leak something of this nature.