What happens to the psyche of a ""cute, fragile"" only child of seventh grade vintage when her mother remarries is the theme for an entertaining just-for-girls book. Jean was not at all happy when her mother announced that she and Uncle George were to marry. Although like Alphonse XIII of Spain, Jeanie was born posthumously, she did not look forward to having a step-father, because then, obviously, her mother's companionship would be lost forever. With the aid of her chum Madeleine, a fat little rich girl, Jean disguises herself as a boy and takes a wild and woolly bus ride to visit her beloved grandmother, Honey, and stay forever. In Chicago, Honey's home, Mother and Uncle George appear, however, and Jeanie sees the light and in the process Uncle George becomes ""Dad"". Although the adults seem somewhat dim, Jean and her deliciously nasty pal Madeleine chatter like two very real pre-teeners. By the author of Timmy and the Tiger, Fun.