Preeclampsia had left no room for waiting. High blood pressure with organ involvement has only one definitive treatment, and that treatment is delivery. In Mexico, hypertensive disorders of pregnancy remain a leading cause of maternal death. Labour was induced. The pregnancy ended at the edge of what medicine calls viability.

The lungs were the first problem. The heart was the second. A vessel that exists only for life before birth — the passage that lets fetal blood bypass lungs it does not yet need, since oxygen comes from the placenta — had failed to close. In babies born this early it often stays open, pushing blood back through the lungs and making every breath heavier than it should be. Zacatecas does not perform that operation. The nearest place that does is Hospital Regional Valentin Gomez Farias in Jalisco, roughly 320 kilometres away, about four and a half hours by ambulance. Surgeons closed the vessel through a small incision between the ribs, without stopping the heart.

What Elias Lara remembers of those months is not only the equipment. She speaks of contencion — the staff holding her steady when the ground gave way — and calls them allies. It is a plain word for something the medical record does not track: that someone stayed beside her while the odds were still open.

The team does not consider the case closed. They plan to follow the girl for five years, watching vision, hearing, movement and language — the faculties most often marked by a birth this early, and the ones that reveal themselves slowly, long after the discharge papers are signed.