Use the excerpt from “Big Water” to answer the question.

To make a proper inference about what Henry and Eva have done for Daniel and the narrator, I would need the specific excerpt from "Big Water" you are referencing. However, based on common themes explored in literature, one could infer that Henry and Eva have provided support or mentorship for Daniel and the narrator, helping them navigate challenges or personal growth.

For a more precise inference and tailored textual evidence, please provide the excerpt you're referring to.