Well, maybe she had more endurance after all. He was better with speed, but she wasn't breathing heavily from exertion. He was damn strong though and the way he held her arm hurt.
Cat hissed at the pain it caused, forcing her back straight and her body against his. A classic move that could subdue most anyone. The claws of her free hand lashed out behind her, trying to grab at his thigh and cause some damage in the hopes that he'd let go over the pain. No such luck for the moment.
"Can't tell you that. Trade secret," she taunted him through gritted teeth, body squirming to get away.
Seconds later she stopped, and while she couldn't quite relax her body entirely - the way he held her arm prevented that - she could grab his thigh and pull it forward so it and everything in that general region was flush against her ass. As which point she wriggled in an entirely new manner.
"I've been a very bad girl, Captain America. Bring me to justice."