There doubtless is something more to this story than you know.
I just saw a program about intersexuality. It’s been estimated that one in 250 births are intersexuals. And even decades ago I’ve read about people who were raised as one sex, and then when puberty started, the other sex became apparent as the real one.
I once asked my doctor about matters like this, and he cryptically reponded, “In matters of sexuality, things are seldom what they seem.”
So, MYOB, dearie! You’re not called upon to have an opinion in this case.