My 1-year-old daughter has always been lovely, smiley, laid back etc. However, just recently whenever I pick her up to take her away from a situation (ie, when she's trying to play with the DVD player or scuttling off mid-nappy-change) she does an annoyed little yelp, stiffens her body and hits me in the face. I tell her firmly no, and she looks sorry and then strokes my face with her finger. I'm really worried she's getting a horrible temper and wonder if there's anything I should do? Or whether it's just a phase? Most of the time she's very loving and sweet.