A little princess / Dubowski, Cathy East

Sara Crewe, a wealthy girl attending a boarding school in London, is banished to the attic and made the servant of the cruel headmistress after her father dies penniless, but with help from a secret friend, her life changes in wonderful ways.

Sara Crewe, a pupil at Miss Minchin's London school, is left in poverty when her father dies but is later rescued by a mysterious benefactor.