I'm no medical doctor, but I think that girl had more than just a big pussy. She is intersexed (modern term for hermaphrodite). Think about it. Her "clit" was way to big and had foreskin and a head, i.e. a micropenis. Also, the reason why her labia was so enlarged is because she likely had testes in that area.
It's crazy to look at, but I don't think it's big issue. People are born with intersex conditions more often than most realize.