York's assumptions are correct: South immediately moves to come at York from his bad side without shame or hesitation, not only to attack but to force him to turn, to follow her movements.

Her fighting style hasn't changed in the years since they would have last trained opposite each other, that would have been as obvious back in Disney as it is here. Momentum, force, speed—any strike that hits will hit hard, but those that don't exert more energy than she can afford to waste.

So she's relying on those that do. Kicks and punches and targeted jabs coming from his blind spot. An attempt to sweep his legs from under him.