Final answer:
The provided extracts do not specify Nelly's true feelings toward Catherine, nor her reliability as a narrator; however, Nelly's complex feelings for the characters in Wuthering Heights can affect her narration's impartiality.
Step-by-step explanation:
Nelly's true feelings toward Catherine and how they might affect her reliability as a narrator is not explicitly revealed in the provided extracts, as the sections do not focus on Nelly or her perspective on Catherine from the novel Wuthering Heights.
However, in general, Nelly is known to have complex feelings towards the characters in the story, which can sometimes affect her narrative. For instance, her closeness to the characters might lead to a biased account, and her personal judgments and affections could potentially color her storytelling.
This layer of subjectivity arguably adds depth to the narrative but also requires readers to consider her possible partiality when interpreting the events and characters of the novel.