In what way is Dinah different from her sisters in the novel, The Two-Family House?

While Judith is intelligent and likes to learn, Mimi is beautiful and focuses on her appearance. Dinah is neither of those things. She is down to earth and plays a fairly insignificant role in the family for most of her life. Dinah goes to Florida with Rose to settle Aunt Faye's estate. She settles there, marrying a local man.