It's the competitive nature talking. Here she was, standing face to face with a well-built, attractive redhead claiming that she could take care of herself. It might have been the alcohol talking, but at the same time--

It was a sort of instinct? Hard to explain. But something about the situation, despite the loud music and crowded dance floor, felt some sort of familiarity. Shego lived for competition, and though she wasn't looking for a fight...she shrugs a shoulder, smirking without saying anything in response.