Final answer:
Shelly got hurt due to a vain or shallow act, which is supported by the themes in the provided texts; none of the provided options directly answer the question based on the excerpts.
Step-by-step explanation:
Based on the provided reference texts, it appears that Shelly got hurt by Steven because she did something vain or shallow, rather than any of the specific actions listed in options a, b, c, or d. The texts discuss characters being vain or shallow, indulging in self-harm out of vanity, misunderstanding social interactions due to a lack of knowledge or confidence, and expressing shock which is misconstrued as a lack of love. However, none of the excerpts directly mention the interaction between Shelly and Steven or the exact reason Shelly was hurt by him.