What do we know about Sarah Smith?

When in Heaven, the narrator sees a glorious procession of beings heralding the arrival of a radiant woman, identified by MacDonald as Sarah Smith, a kind woman upraised on Earth but whose devotion has led to her exaltation in Heaven. She is a stunning example of the beauty of humility, and it is clear that Lewis believes that famous people will probably be next to unknown in Heaven, where the first shall be last and the last shall be first.