You need to get her into speech therapy immediately (I really do mean that; do it as soon as possible). Girls are more likely than boys to spontaneously recover from stuttering, but if she doesn't, speech therapy at her age will help her immensely later on in life. If you wait too long to start speech therapy for her, the effects from the therapy won't be as effective. This is a critical age for speech therapists to intervene and help, with regard to development of certain sections of her brain that relate to motor control and speech functions. *Edit:* I just want to reiterate the risks involved here. You have been perceptive enough to identify a neurological disorder, stuttering, at one of the earliest possible ages. You have the time (and presumably the resources/money) to employ therapy which can heavily reduce the impact it will have on her life. If you don't, you risk plaguing her with a lifelong impediment that will affect her ability to communicate vocally (job interviews, presentations, introducing herself, poetry, whatever). Take action.