Thanks Rayme but if you really think about.....
Is too much of a fashion follower and a bit of "mean girl" where fashion matters and will scream if she breaks a nail or gets scratched. She couldn't really punch anyone while trying not to fall down because she doesn't have much hand eye co-ordination to finish the punch.
Has the rock chic attitude and appears to be able to defend herself if need be and probably have punched a few people before. From when she first appeared she had the look suggesting she could knock down anyone who stands in her way without worrying about breaking a nail or looking pretty all the time.
So thats my argument. Hilary Duff is just a girly chicken.