Out of the Dust by Karen Hesse.
Book Description (from Amazon): Like the Oklahoma dust bowl from which she came, 14-year-old narrator Billie Jo writes in sparse, free-floating verse. In this compelling, immediate journal, Billie Jo reveals the grim domestic realities of living during the years of constant dust storms: That hopes--like the crops--blow away in the night like skittering tumbleweeds. That trucks, tractors, even Billie Jo's beloved piano, can suddenly be buried beneath drifts of dust. Perhaps swallowing all that grit is what gives Billie Jo--our strong, endearing, rough-cut heroine--the stoic courage to face the death of her mother after a hideous accident that also leaves her piano-playing hands in pain and permanently scarred.
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