my lil girl who turns 2 in july seems to have taken to hitting not just anyone, but me she doesnt hit her dad,nan or anyother family member. i have never hit her. i have no idea what to do i have told her off and said it is not very nice to hit mommy please dont do it and say sorry. 2 mins later she hits me again. her dad has told her off for it. i have no idea why or what has caused this to start happening she also pulls a very aggressive face where all her face tenses up and like she is gritting her teeth.