The Adventurers by Gustave Aimard

Whilst the ceremony we have described was being accomplished, a terrible event was passing not far from it, on the banks of the river, in the camp of Don Tadeo de Leon. The three parties which divided Chili, and aimed at governing it, had, as if of one accord, chosen the day for the renewal of the treaty to throw off the mask and give their partisans the signal of revolt. Don Tadeo, who feared everything from Dona Maria and the General's spies, had consented, but with regret, that Rosario should accompany him to the plain, to be present at the ceremony; he had taken her from the convent, and brought the young girl with him, inwardly pleased that she would thus not be in Valdivia during the serious events that were there preparing.

Dona Rosario, to tell the truth, had only consulted her love in the request she had made of her guardian; the desire of seeing unobserved, for a few hours, the object of her affections, had dictated it. Don Tadeo, who could not on any account be present at the ceremony, being obliged to conceal himself, took the two young Frenchmen aside as soon as his little encampment was arranged. It was then about seven o'clock in the morning, and the crowd began to flock to the plain. The King of Darkness cast a prudent and searching look around, but, reassured by the complete solitude that prevailed, he at length decided upon explaining to the young men, who were astonished at this strange proceeding, all that appeared so unusual and inconsistent in his conduct.