I liked her outfit. Her coat was very nice and it worked well with the T and the pants.
Had she for ex. worn a loose blouse to that outfit instead of the rather tight fitting T she would have looked like a woman in a tent.
My only critique is on her hair. She looks fantastic with her hair up in a bun, royal, elegant and most professional. With her cheeleader wind blown tossles she looks not casual but unkempt. Such a pity.
About the flying: she should be quite fine in first class, being able to walk around, whenever she wants, get enough to drink, whenever she wants and also she would be able to stretch out as much as she likes. However, the fatique from jetlat can't be avoided even by travelling in luxery.