personaly i would teach her the word no but at the same time as saying no you should make a point of ignoring her, by this i mean as soon as she gets rough say no and then straight away stop play and turn away from her,do this everytime and she should get the message that play is for toys and not hands and feet, i have a ten week old and he attacks our feet every time we walk round the house, remeber always praise when it right. good luck