Looking for a novel, the protagonist is a girl (orphan) who pioneers in the western United States alone. Should the book be a well-known award-winning children's book or a teenager's book?

There are two books, both written by American writer Willa Cather. Ah, pioneers! Actress Alexandra, a Swedish immigrant? Bergson came to the wilderness of Nebraska with his father when he was a child. After her father died, she inherited the family business and struggled in extreme poverty, facing a series of setbacks and blows: three years of drought, crop failure, economic crisis, people around her abandoned their land and fled to cities; When the family situation improved, two brothers prevented her from getting married for the sake of family property; After graduating from college, her carefully cultivated little brother died of murder ... She didn't waver or give in, but with perseverance and confidence, she moved forward unswervingly, with diligence and wisdom, with far-sighted planning and scientific management, she conquered the unruly barren hills and turned them into thousands of miles of wilderness.

My antonia, a Bohemian immigrant, and the Shermeda family left their hometown and came to Nebraska. When they first set foot on this desolate land, they lived with their bare hands. Mr. Smerda couldn't bear the pain of homesickness and the pressure of life, and finally shot himself. After Smeda's death, his daughter antonia shouldered the burden of the family. She "went from farm to farm and worked around like a big shot". Later, antonia went to the town as a helper, temporarily freeing himself from heavy physical labor. However, while helping workers, she was tricked into getting pregnant and then abandoned. Antonija, who suffered a heavy blow, did not recover from it. Instead, he returned to the countryside with strong perseverance, gave birth to a child alone and started his life again. She married Anton Kuzak, a farmer, and started a business together. Twenty years later, antonia is full of children and has a full and rich life.