Romanticism & naturalism is the correct answer.
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.
Everyone longs for renewal.
based on the context clues, and process of elimination, the answer is the above.
I feel that it is the first one, she is losing interest, because a lot of the rest of the story suggests she is not all the interested with him.
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