She has a weak immune system, she is happy that they are chaperoning, the trip is important because she wants to see her friends
You mean the charges against McCandless? Kraukauer is the author.
This chapter seems to be a digression from the McCandless story, as Krakauer pads his novel with filler material, tangential stories of others who have died in the wild: Gene Rossellini, a "wayward genius...interested in knowing if it was possible to be independent of modern technology"; John Mellon Waterman, whose "life's work", became an "accumulation of notes, poetry, and personal journals"; Everett Ruess, an artist and writer who died in the Sierras; and the Papar, Irish monks, whose "remarkable voyages were... undertaken chiefly from the...