To dream of a girl often represents aspects of the self that are passive, receptive, sympathetic, co-operative, nurturing, or that are compliant. Aspects of yourself that are giving.
Negatively, a little girl may reflect an aspect of yourself that is easy to control or push aside. A sign that you are not being assertive enough or feel that someone else is making your decisions for you. Your tendency to easily submit or be compliant. Getting told what to do.
Fear of sensitive issues being easily humiliated or overpowered. Fear of someone stronger than you overpowering you. Something in your life is not powerful enough to defend itself. Fear of not being able to protect yourself or something important to you. Feeling that power is easy to steal from you. Feelings about yourself being a wimp.
Alternatively, girls may reflect feminine qualities of your personality.