Summary of "The Secret Garden" by Frances Hodgson Burnett
Mary Lennox was a sour-faced 10-year-old girl who had been born in India and had always been accustomed to having her own way. As she grew older, she became even more disagreeable and self-absorbed. When her parents died, she was sent to live with her uncle in England. At her uncle's estate, Mary discovered a neglected garden, hidden behind walls and locked doors.
Question: Based on the passage, which inference can be drawn about Mary Lennox?