I suspect Meghan might be feeling very hemmed in, bored in fact. She probably looks around thinking 'what can I do, how can I make a role for myself?' and feels frustrated with the system. I suspect she's gone marching in, issuing orders and throwing her weight around from the off, and that has not gone down well. Her manner with staff is probably rather entitled, and that has pissed a lot of people off. Also, maybe she expects staff to work much harder and longer hours , not realising they aren't paid that well (I understand) and it's a matter of working with, not for. I may be completely wrong, but this is what i suspect. A lot of ruffled feathers, people feeling put out, and this has generated 'leaks'. I doubt very much it is other Royals, most probably staff or ex staff.
I wondered why CM is doing an interview. There must be a reason. Is she trying to balance Doria? Who knows? There seem to be a lot of PR machines at work in various ways.