Well, there goes her leg. Honestly this is only the third most painful thing to ever happen to her, and the second most crippling. However, while having previously lost limbs, the pain is still indisputably real. The blade tore a wound in her side as well as cleaved the lower half of her leg rather messily off of her body. Her knee strike was a miserable failure, however, due to Greystoke's grossly contorted form and crouched position she now had a ludicrous advantage.

What the swordsman neglected to react to was the arm right next to his head, as he turned to the right with his blade he had put her hand directly in front of his face. And with his position of being crouched down, and with his body contorted, there is literally nowhere for him to run. It would be impossible, even for Greystoke to move anywhere right now. What with his feet being rooted in place as well.

Jean howled in fury and agony, basically losing her mind on the spot. About the fifth time this has happened to her in the Arena. Her hand opened and she shoved it towards Greystoke's face. While nowhere near as strong as her knee strike, Jean is still physically the most imposing character in the Arena right now. 

When this attack connects, Jean's hand will clench tightly around Greystoke's face. Her strength will allow her to crush his head in the palm of her hand, not allowing much time to resist once the initial grapple has taken place. 

Should he survive the initial crushing with her hand, she will follow up by falling forward. This is not on purpose, rather, somewhat improvised. As she really doesn't have any say in the matter whether or not she is going to fall over. When she does fall over, she will also force Greystoke to the ground. If Greystoke is pushed to the ground, she will proceed to enact her revenge on him for cutting off her leg.