The Drift Fence by Zane Grey — Read

For days Molly lived in a perpetual state of nervous dread of events that had cast their shadows.

Arch remained in one of his brooding moods. He worked in the fields as if to make up for lost time. And he did not go to the village in the evenings. The Haverlys rode over every day or so and engaged him in long talks, which left Arch more taciturn than ever.