Adversary
It means one's opponent in a contest, conflict, or dispute.
This extract if from 'The Leap' by Louise Erdrich.
Explanation:
It is about a blind mother who is surviving about half of the blindfold trapeze act, the Flying Avalons. The daughter says how she was saved by her mother thrice.
First she was saved when a tent pole cracked and fell on the town square. The father and mother gave her life. the other incident was when their house caught fire, her mother saved her.
The girl trusted her mother and was saved.
narrator ADDRESSES the reader - first-person
narrator is detached observer WITHOUT complete knowledge - third-person
narrator who is a PARTICIPANT with LIMITED knowledge - second-person
I capitalized some words so that you can tie the definition with the term.