Sandra is the second child of Alfredo Cisneros de Moral and Elvira Cordero Anguiano. They had seven children together, one girl and the rest were boys. There was one daughter but she died as a baby after giving birth. Sandra's father wants his family of boys. During her childhood, there was sexism so her father which is pushing her over the limits. Since her father Alfredo Cisneros de Moral moved the family between Mexico City and Chicago, Sandra was shy during her childhood. She doesn't make close friends for pretty long. Her mother, Elvira Cordero Anguiano, was a strong female who wanted Sandra to achieve her goal.