Welcome to Susan's Place. The best way to handle this is to have her see a gender therapist. While it sounds like your daughter is transsexual, you will need an expert diagnoses. After that, she should dress as she is comfortable and when puberty is near, blocker should be provided that will prevent female development until she is old enough to decide what she want. Should she desire to return to the female role, stoping the blockers will allow her to do so. Should she decide to become a male, that path will be available to her with minimal surgery. Mostly you are already doing the right thing by allowing her to see both worlds so the decision will be better informed. I missed a good deal of growing up because I was far to deep in to my problems between age 13 and 23. I didn't have much of a life as a teen. Do the above and your daughter will have wonderful memory of early childhood and the teen years.