What is the exposition of the story servant girl?

This is a story of a humble good looking house helper named Rosa and her adult. Rosa is portrayed as a physically and verbally abused servant girl. Rosa fantasized about the cochero whom she named to be "Angel" who later on known to be as Pedro. She imagined him as different from other men, more gallant, gentler, and her rescuer from her miserable life with her mistress. Angel became Rosa's hope and embodiment of desire to be free from servitude. Her admirer Sancho on the other hand was rough and rude towards her and violently hurt her. She ran from her mistress house and Sancho's boorish arms. She longed to find her "Angel". But her savior does not really exist. Angel was just a figure that she invented. In the end, Rosa just accepts her fortune as a miserable servant. Instead, the man she believed to be her rescuer, was the one who returned her back to her pitiful life.