Because of Conscience by Amy Ella Blanchard

"Come, come, step up, my dear," Mère Michelle said so often, one morning a few weeks later, that Alaine realized with a start that she was less virtuously energetic than usual. "So triste, my little one, or is it that you are fatigued from yesterday's labors? I feared that you were going beyond your strength out there in the field."

"No, no," protested Alaine, "I have seldom enjoyed anything more. It was so pleasant there out under the blue sky, but one has so many things to think about as one grows older. I will hasten to finish my daily tasks, and then I wish to see Mathilde Duval."