Think of something, like being left out or having your parents talk about your siblings more than you.
Explanation:
Getting treated unfairly is something nobody wants to feel. If there is anything in your past or maybe even present that made you feel that way, Write a paragraph describing how you felt and how you came to the end of it. For example, If you were getting left out. What did you do about it? Did you just let yourself suffer from it? Or did you speak out about it? Write your paragraph about anything that made you feel like you were getting treated unfairly or differently than others.
I would say that the line which implies the author thinks Helen's behavior is going to hurt Helen herself is Don't cut your fingers with the edge / Of your keen wit Because her mind and behavior are going to hurt her, or rather make her hurt herself.