Because she probably isn’t as familiar with boot licking protocol as you seem to be?
I just assumed, directly in line to the thrown to some degree = Prince.
Yeah, it's not like she's got a husband could simply tell her, I mean it was major enough for her to bring up in this interview but apparently, Harry, who has been in the Royal Family since both, couldn't tell her a simple fact. And she's completely oblivious to his uncle's family or his aunt's family too...
You're being a bit credulous there tbh,...