I checked out a YouTube version of the 4S in slow motion.
https://www.youtube.com/watch?v=9foZhYIgbO8
It appears to me that the jump isn't overly prerotated and is actually fully rotated on landing, although the landing is a little rough because presumably she lands it quite forward on the blade and hits the toepick. Getting caught on the toepick causes her to swing the jump around on landing, but it's not under. It's actually not even short of rotation. I'm expecting it to be higher and better at GPF.
https://www.youtube.com/watch?v=9foZhYIgbO8
It appears to me that the jump isn't overly prerotated and is actually fully rotated on landing, although the landing is a little rough because presumably she lands it quite forward on the blade and hits the toepick. Getting caught on the toepick causes her to swing the jump around on landing, but it's not under. It's actually not even short of rotation. I'm expecting it to be higher and better at GPF.