In A Wagner Matinee what characteristics of the Nebraska frontier does Willa Cather emphasize?

In "A Wagner Matinee," Willa Cather emphasizes the stark beauty and harsh realities of the Nebraska frontier through vivid descriptions of the landscape and its impact on the characters. She highlights the isolation and struggle of pioneer life, contrasting it with the cultural richness of the music and art that the protagonist, Aunt Georgiana, experiences in the concert hall. This juxtaposition underscores the emotional and aesthetic deprivation faced by those living in the frontier, while also revealing the transformative power of art and beauty.