Being oneself is more important than pleasing others.
Explanation:
The passage states that "May Pole getting the new clothes all dirty and sweaty and trying to act like a fairy or a flower or whatever you’re supposed to be when you should be trying to be yourself", Mary is being mary, she's being herself and, she didn't care about the other people judging her...i think lol.
1 find the most reasonable one the think if this right then if you think it not repeat that processes until you are satisfied with your choice. Or don't read lol