Um, doesn't a dissertation have to be 100% correct across the board? Then again leftists run most colleges so underneath the bottom of the barrel expectations there.
To quote a prominent book, “it takes a village”. I don’t think she is alone. Someone is probably telling her what to do also. But she probably has the most hands on control of his daily activities.
I agree that the family, including his sister, are heavily involved in influencing his career path. But his role as president is most likely influenced by people outside the family.
I don't know he's quite reliant on his family for their opinion, and the family have been in politics for years, so I'm sure they know how the game goes.