By the time he's got his head turned around, she's already bringing down her leg onto his shoulder. Not hesitating with a follow up attack was the best decision she could of made. The kick lands with enough force that he goes down to one knee, teeth gritting as he holds it in agony. Vegeta realizes he's in a bad position, cursing himself silently for allowing himself to be this vulnerable, and leaps off the ground to his left in anticipation of another follow-up attack.