I don't see anything wrong with how much leg she is showing.
Actually it seems that there could be an issue with the top of her outfit. Seems like it could easily slide down and expose her breasts too much. Probably inappropriately.
I would understand if the FA saw her boops out and called her outside to ask her to cover them with a blanket.
But the pax says she was asked to cover her legs. That does not make any sense to me.. Perhaps she is not being 100% truthful?
I also thought she might be on a non rev ticket. And non rev dress code is a whole different story . That outfit definitely seems not to be in accordance to non rev dress code.
but the article says she was refunded for her ticket. So seems like it was not a non rev dress code issue.