There are so many different ways to be homesick, she’s discovering. There’s the obvious kind: the textbook definition where you miss your parents and your home This is the kind she felt when she was 12 and spent three weeks at Camp Watama on Lake Wentworth in New Hampshire. Her tentmate was a girl named Cammy Mason from Short Hills who wore sparkly eyeshadow and liked to brag about how she had already watched Dirty Dancing with her older sister’s friends. Cammy’s brash confidence made her feel small and inexperienced and homesick for her two best friends still preferred to play board games and watch old episodes of I Dream of Jeannie when they had sleepovers.