There's other reasons for flying private.

If you didn't have to arrive 2 hours early to get through Security, nor limit your liquids, nor take off your shoes, nor take out your cat so its carrier can be scanned, nor wait to board the plane, nor wonder if your baggage made it onto your plane, and you could be sure ahead of time that you'd like the food, and the whole airplane would get quiet if you wanted to sleep, and no crying babies unless you bring one... What would you choose?

And there's definitely people who want to kill her.

But that doesn't include her mom or her friends or her stage crew or bodyguards or publicity people.