The majority of Audrey's fighting techniques were specifically geared to take on men who were up to twice her size or bigger; she relied heavily on greater speed, being able to get within someone's reach, and use whatever locks, traps, or pressure points necessary to bring them down in as little time as possible. She was drawing this out because it was fun, but it meant that she was taking some hits herself. Not that she minded. She was clearly getting to him, and a reaction other than 'amused condescension' was a win in her book no matter what it was. She could see him getting angry - his body language made that clear, even without the cute little growling noise he made - and it meant she was laughing as she hit the ground.
The fist hadn't bothered her. She could see he'd planned to pull the punch, and while she admired the control, she could still see he was having trouble with the whole 'being a woman' part of this. She blocked it because it was expected of her, laughed again when he bit her lip, arching her back to press up against him before he pulled away. Instead of retreating to a more neutral stance, however, she followed him up to stay within his reach - it would diminish the force of his hits if he couldn't get a full swing and enabled her to strike inside his defenses, landing two solid hits to his midsection before going for a leg sweep. "Do you now?" she asked, grinning. "If you're lucky, I'll let you do it again."