María was certainly with the combined army after it returned to the native capital at Tenochtitlan in June 1520: according to Bernal Díaz del Castillo, she was the only Spanish woman with them at this point. There had been the bloody unrest in Cortés' absence, and now the conquistadors were struck by a full-scale native revolt known as the "Noche Triste": after a week of street battles, the army was forced to fight its way back out of the city, suffering heavy casualties and losing most of its baggage and artillery.