Spain - San Fernando - Portrait of María del Rosario Herrera González, 43. Herrera González found out she had a sister only when she was 15. One evening, as she was preparing to go out with her friends, her father abruptly entered her room and told her to look for girls her age who looked like her. “When you find one, ask her if she has a birthmark on her left leg”, continued the father, to her disbelief. “I am sure they stole her”.