All kids have to learn that just because you can hurt someone, doesn't mean you -should-. But I don't think a two year old can grasp something like that, most likely she'll think wrestling and fighting is normal social interaction.
I'm not knocking your parenting, I have a three year old 'wild child' who loves nothing more than to get mommy's foam roller out and practice punching and kicking it. It was fun at first, but then she started swinging and kicking at us and the dogs when she got upset so we had to hide it from her. When she's a few years older we'll start enrolling her in some programs, but right now - we're just trying to survive raising her.