The mood that these words help create is one of despair and difficulty. Clearly the narrator is struggling, he actually uses the words "difficult" and "struggling" clearly within his paragraph. Other words that contribute to this mood of despair are "fear", "faint", and "hungry". A person usually only feels these things and discusses them when they are in a place that is dangerous and that they have no real hope of getting out of.
The figure of speech used in the sentence above is PERSONIFICATION.
Personification is a figure of speech which attributes personal nature or human characteristics to an inanimate objects. In the sentence given above, the author wrote that 'the wind whispers and the stream giggles. These are actions that only human beings can carry out, but the author is given the attributes to wind and stream, which are inanimate objects.
Wait what I can answer this by saying eerily means scary but I really don’t know. You can comment if you made a typo.
