PBL, I agree with you that the x-wind component of either runway was equal. Their problem was after decrabing unless you keep the bank into the wind you will drift across to the downwind side of the runway. You learn this as a student pilot. Letting the upwind wing come up after decrabing will have very consistent results, going off the downwind side of the runway. She didn't understand how to do a cross wind landing to let that happen. If it was a gust that lifted that wing an experienced pilot would have gone around but it didn't look like a gust.