<P> Tibby's parents are described as former hippies . She was born when they were 19, and she apparently spent much of her early life swept up in their various adventures; her father was, at turns, a writer for a socialist newspaper, a public defender, and an organic farmer, while her mother was a sculptor . Eventually, her mother became a real estate agent and her father became a corporate lawyer . They settled down in a suburban house with Tibby and her two younger siblings, Nicky and Katherine, who are respectively thirteen and fourteen years younger than her . Tibby often feels like an outcast in her own family, viewing herself as a leftover of her parents' former life . As a result, she resents her younger siblings and tries to distance herself from them during the first two novels . </P> <P> Tibby's best friends are Lena Kaligaris, Carmen Lowell, and Bridget Vreeland . She has known them all since birth . She also befriends Bailey Graffman and has a guinea pig Mimi who both die at the end of the first novel . </P> <P> Stuck at home in Bethesda, Maryland while her three friends went to Greece, Mexico and South Carolina, she decides to make a "suckumentary" about people she considers to be "lame," among them her coworkers at Wallman's and Brian McBrian, a fellow high schooler who spends most of his time playing Dragon Master at the local 7 - Eleven . At Wallman's, Tibby meets twelve - year - old Bailey Graffman, who is dying of leukemia and is eager to help Tibby with her movie . Bailey, afraid of not having enough time to truly understand people and, in turn, be understood, looks beyond appearances and finds the true worth in each of Tibby's documentary subjects, allowing Tibby to do the same . Bailey dies at the end of the novel and Tibby decided to make the documentary about the summer she had with Bailey </P> <P> Tibby takes a course in filmmaking at Williamston College . She tries desperately to impress Alex and Maura, two of her classmates . In the process, she ends up shunning Brian (who has become one of her closest friends since the end of the first novel) when he visits her and makes a video which upsets her mother . In the end, she realises that Brian is her true friend, and Alex and Maura are phony . She makes a touching video about Bailey, and Brian and her mother forgive her . </P>

Who dies in sisterhood of the traveling pants