The theme Della's actions in the sentence suggest is "Sacrifice for a loved one is not always easy".
<h3>From "The Gift of the Magi."</h3>
Once she faltered for a minute and stood still while a tear or two splashed on the worn red carpet.
The statement indicate that sacrificing for a loved one is not always easy because Della sacrificed her hair which is her most prized possession to buy gifts for her loved one.
Therefore, Della's actions indicates sacrifice for a loved one is not always easy.
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Explanation:
That does not mean they might be incorrect though.