Sara Crewe is the main character in the novel "A Little Princess" by Frances Hodgson Burnett. She is a young girl who is sent to a boarding school in London while her father works in India. Sara is known for her imagination, kindness, and strong sense of self-worth, which she maintains despite her circumstances. When her father dies and she loses her wealth, Sara faces hardship and mistreatment from the school's headmistress, Miss Minchin. Despite these challenges, she remains hopeful and resourceful, using her creativity to cope with her new life and inspire those around her.