Sonia Salinas Fierros, the mother of the girls, remained unconscious for a considerable period while carrying conjoined twins. Since her pregnancy was stable, she didn’t visit the clinic frequently. In the spring of 2005, Sonia started feeling unwell and decided to consult a doctor.

That’s when she received the surprising news that her future daughters would be born connected to each other. Sonia and her husband Federico made the decision to temporarily move from Mexico to the United States to consult a clinic in Los Angeles regarding the possibilities of separating the girls. Unfortunately, they couldn’t return to their home country before the birth.