Crow Lake by Mary Lawson

A disaster hits, and two teenage brothers take responsibility for raising two much younger sisters in a small rural Canadian community. The narrator is the older sister who many years later is contemplating returning to join her family in celebrating a nephew's 18th birthday. She is now a college professor and worries about "flaunting" unintentionally her success and that of her partner who is also an academic. She recalls life growing up, the struggles, as well as the pleasures, yet also feels guilt over the sacrifices her brothers made to keep the family together. A sweet poignant story.