I'm not a man, but I imagine from her situation (raised as a woman, never menstruated, never noticed any male genitalia, was informed by a doctor that she has no uterus but does have testicles) that the testicles were undescended.
Her situation is consistent with Androgen Insensitivity Syndrome.
http://ghr.nlm.nih.gov/condition/androgen-insensitivity-syndrome