The oldest new mother in the world has died just three years after giving birth to twin sons at the age of 66. What killed Maria del Carmen Bousada de Lara of Spain is unknown. But there is rampant speculation that she died of breast cancer—a fact she might have known ahead of giving birth. Bousada was diagnosed with a tumor before she delivered the boys. Afterwards, she said on Spanish TV that she thought she could have cancer. Bousada, who became pregnant after having in vitro fertilization in the U.S., was villainized in the European press; she had told doctors she was 55. Her family wasn’t entirely supportive either, though the twins will likely be taken care of by two male cousins who are in their 30s and 40s. Bousada always wanted children of her own, and never married. Before she died, Bousada said: “My mother lived to 101 years-old and I have every reason to believe longevity runs in my family.”