Why was the father suddenly a stranger to his family in the story of the beautiful horse by Paul dizon?

In Paul Dizon's story "The Beautiful Horse," the father becomes a stranger to his family due to his emotional detachment and obsession with the horse he has lost. His fixation on the horse symbolizes his inability to connect with his family, leading to a growing rift between them. As he prioritizes the search for the horse over familial responsibilities, his absence and indifference create a sense of alienation, making him a stranger in his own home. This dynamic highlights the themes of loss and disconnection within familial relationships.