Mary is rude because to call a native a pig is the worst insult of all.
“Pig! Pig! Daughter of Pigs!” -page 6 in The Secret Garden
Mary didn’t care very much for books but the thought of the library reminded her of all the unexplored rooms in the manor.
“She wondered if they were all really locked and what she would find if she could get into any of them. Where there 100 really? Why shouldn’t she go and see how many doors she could count?“ Page 45 in The Secret Garden.
Mary is very inquisitive about roses. She is trying to find out more information about the secret garden.
“Mary was becoming quite excited. Did they quite die? Do roses die when they are left to themselves? She ventured.” Page 78 in The Secret Garden.