Silvia, 41, who has eight children, is pictured with Marilyn, two, Uriel, seven, and Braian, eight. She has cervical cancer and is undergoing surgery again in a few days. Four years ago she lost her job at a refrigerated warehouse, and is still waiting for compensation. Her husband is ill. She begs after her children come home from school in the afternoon. She wants them to study so they can have a different life.