Contact this shuttle service and see what they can do. I think they were out of business during the pandemic, they might be more regular now. https://ctlimo.com/airport-shuttle-service

Maybe you can find another shuttle service?

Other than that my friend your options are limited. Consider having her rent a room near jfk where she could stay a few nights a week?

Unless her company will pay for a limousine to and from, or she starts driving - it’s metro north to grand central. She can get a shuttle bias to jfk or she would have to take the subway to the air train. She could take the 6 to the e or f and catch the air train in queens, or just walk 8 blocks directly to the e or f to catch the air train.

It’s not going to be easy. Good luck.

Edit: Someone please find Aladdin’s magic lamp and wish for the air train to be extended over the white stone bridge to stamford!