Who is Marion Littlejohn from A Sparrow Falls and what is their importance?

Marion Littlejohn is young and pretty. She has a small face with a snub nose that is freckled. She has a quick smile, and a direct demeanor, and is the object of Mark's first proposal. Working at the land registry office, she meets Mark when he first comes to Ladyburg looking for information about his grandfather's death, and the subsequent dispersal of Andersland. She has a strong and unyielding love for Mark, and after their first consummation, she writes him daily - long letters filled with love and promise of their future together.