I hated it when they seemed to try to make it about fighting style. They did that once in a fight with Dick/Cass too and it made no sense. She hasn't just memorized different fighting styles. Nobody could memorize all the styles there are. Most styles, even if they have the same name, would vary all over the place. The point is that she's reading your body's movement so can tell what you're going to do, not that she's recognized you're doing X-style and therefore are going to make X-move.