She sidestepped his staff to the right, using her left weapon in an attempt to clash against the tip of his staff and keep it away from her while she would move in closer and stab with her right weapon into where an opening in the ribs should be. She didn't believe he'd be able to use any more of that fog during this time, but if he did she wouldn't have any good way of avoiding it. She just had to commit to her attack and hope it would work out, ending his life before he could get off a counter.