What is the mood of the book Out of the Dust?

Though the mood throughout the novel shifts and changes as the plot develops, the overall mood of Out of the Dust is hopeful.
The heart of the novel is about the ability to heal from hardships, and as Billie Jo begins this healing process, she begins to feel hope about her future.
Billie Jo's hands are severely burned in a kitchen accident in which Billie Jo's mother is killed. Billie Jo had learned to play piano from her mother. After a long process of refusing to play the piano, or being unable to play, Billie Jo learns to use the piano to help her healing process. For a while, Billie Jo lost her hope of becoming a pianist, but through the healing process and the acceptance that sometimes healing hurts, she is able to believe in herself again, saying “The way I see it, hard times aren’t only about money, or drought, or dust. Hard times are about losing spirit, and hope, and what happens when dreams dry up.” This means that although for a while, Billie Jo’s dream of playing the piano was dried up, now she has hope that the hard times are coming to an end, and she’ll show resilience as she keeps playing.