The elements of a memoir are that friendship, personal thoughts, and using the pronouns me and I. His heritage is important to him. The descriptions illustrate the key ideas what is important to Powell they use vivid words and good descriptions. He describes people and events that had strong influences on him.
Blanca Flor and Juanito will probably be reunited later in the story. After all Blanca does to help Juanito escape, it is likely that he will find help and return to the farm to save her. He would not leave her there to be punished after she saves him and helps him get free.