Medically this condition is called Transsexualism. Physically she is female but psychologically she is male. Her nurturing must have played a major role in strengthening her psyche as a male than a female. Transsexuals are very determined for gender change and they can go to any extent for that. Although, some of them are satisfied with cross dressing only and others go to extent of surgery. Even suicidal attempts are common amongst them. However, one needs to rule out mental illnesses like Schizophrenia in such cases. Consult Psychiatrist for further help.