Based on the excerpt from "The Crow-Child," it does not directly present a dream or provide enough context to definitively answer the question regarding what the dream reveals. However, given the themes of the story and the relationship between Ruky and Cora, one might infer that if a dream were to be considered within the broader narrative, it could potentially relate to Ruky’s feelings of abandonment. This is due to their status as orphans living with an uncle and the close bond they share, hinting at underlying emotions related to their circumstances.
Thus, from the options provided, the most fitting answer seems to be:
Roky’s feelings of abandonment.