She’s an older divorcee from a totally different culture and social set, who has shown herself to be rather self-centered and uncaring, speaking of abandoning her elderly pet dog in the US.
I honestly don’t see this lasting. Harry’s heading for one of those epic life lessons and it’s going to be not just hugely expensive but highly public and therefore embarrassing.
I think it would be highly embarrassing and shameful on her part, however. She would end up not being too popular of a person if he took him to the cleaners.
Apparently none of the others signed them either — Princess Di, or William.