FWIW, I think it is entirely possible she thought he asked her to move because she was a woman, and once that narrative took hold in her head, she dug her heels in and still has no idea what or why he was asking. IOW, it is not a he said/she said and that one of them is lying, but both are telling the truth. Except her "truth" is based on something she concocted in her own mind based on preconceived expectations.
I really hope there is video. I wonder how long it will be until airlines start installing cameras on planes.