It's another confirmation she is not the person she tries to pretend she is.
Rumours the Queen had to call her to task about her treatment of staff, William confronting Harry about how she treated their staff, Jason Knuff raising it in writing, Harry trying to justify the issues with their staff as being caused by the pressures of the UK media and the RF. Now, it's being determined again, that she is the same nasty person, no matter what side of the Atlantic she is on.
We have seen public glimpses, when she drops her guard and can't help herself, of how awful she really is, not least in how she treats and demeans her wuss of a husband.
Cue a People or Harpers Bazaar article from 'friends' about how kind and warm, etc. etc. she is.