She's rich enough to be able to easily afford ANY travel type possible, without having to even ask the cost, and she chooses the dirtiest and most expensive one.
If she cared about climate change, she would just intrinsically understand that paying someone else to be a good person doesn't morally justify her being a bad person (aka, how carbon credits are marketed and sold).
Instead of taking a trans-oceanic flight, she could go on a container ship or sailboat. She's a musician and I bet these experiences would be vastly more inspiring than harassing college kids through lawyers.
For domestic travel she could use a vehicle powered by restaurant waste vegetable oil (WVO) instead of fossil fuel. Or she could take an EV charged by renewable sources. Ewan McGregor and Charley Boorman did a 13000 mile (21000km) electric motorcycle trip in 2019 from the southern tip of Argentina to Los Angeles called The Long Way Up, their 3rd such superlong trip, and their first on electric vehicles. They loved it and called it the future, and they had support from a prototype Rivian truck, which therefore advanced the space of electric cars as well. MANY people are doing this, some rich, some poor. For our climate emissions, there's no time left for excuses either for Taylor Swift or for ourselves.
Base fees are regressive and financially disincentivize progress.
If you want people to use less electricity, remove base fees and increase usage fees.
Another way of looking at it: imagine you had to pay a big fee to enter the grocery store, but once inside, everything was similarly priced. A potato would cost almost the same as a ribeye steak. You'd see lots of people walking out with steak, and as a result we'd have a major increase in agriculutural climate emissions.
Electricity is the same way. When everyone's paying base fees to artificially lower usage rates, poor people are subsidizing the extravagant usage of the rich.
Remove regressive base fees and charge people for the damage they do.