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Read The Pleasure of Reading, edited by Antonia Fraser.
What is Kamila Shamsie implying when she writes that C.S. Lewis, a well-known British novelist and academic, was unlikely to have ‘written for‘ a girl in Karachi?
Answer:
Since she has been asked who she writes for, the British Pakistani writer, Shamsie, explains that not because she grew in Karachi, should be expected that Lewis´s writing was not for her, the same way she considers her novels as not aimed for a specific "nation or ethnicity."
Explanation:
Her point being that is a gift to know that "there will always be people who don’t know the world you’re writing about, will miss allegories and allusions, and yet will love your books."