Thanks @SusanC, good find & very interesting.
Don't recall AE ever bragging about the achievements of her dad & uncle but narcs can be jealous of other's success unless it reflects on them, like
big E being an A pupil (then the subtle put down about little E) she recently mentioned her mum making passive-aggressive comments/put downs so *if* her mum was a narc she wouldn't have been shown healthy boundaries, along with possibly witnessing controlling (coercive) behaviour that worked it could reinforce to a child that it's a successful way to manipulate others. Her dad being so successful would have been absorbed with his work & maybe over compensated for any absences by spoiling his only daughter especially if she was a daddy's girl? She was definitely spoiled.
I don't know many parents who wouldn't move house just because their young daughter threw a massive hissy fit as
she didn't want to move.
Maybe she saw her mum behave in similar ways & saw that it worked, coupled with nobody ever saying no to her, then that could have reinforced her feeling she can do the same & behave however she wants. ???