The 15-year-old author is the great-granddaughter of Elinor Glyn. With this bit of extra-literary datum recorded, it should also be noted that she is a prodigiously gifted young novelist who writes with more maturity and insight than great grandmaw could ever be accused of. Her novel takes Antonia Rutherford (a sensitive-but-not-enough-to-make-ya-sick published poetess) from the age of 9 to the age of 15 and through four educational institutions. These, plus occasional jaunts with her bohemian parents, make up the book. Limited? Of course! But few writers have described the terrors of the school yard or the calumnies of cafeteria dining with such frightening accuracy or subtle humor. She's not only been there, she is there.