Mrs. G is Mr. Tushman's assistant at Beecher Prep. Mr. Tushman insists she runs the school, which primarily implies that she runs the administrative aspects of Beecher Prep—she's the one kids go to when they forget their locker combinations or need other assistance of that sort. Though she's nice to August at their first meeting, August isn't thrilled when he notices her "shiny" (fake) smile.