Drift (2001)

Fifteen-year-old Sammy has recently become aware of desires she awakens in men but one man to whom she is herself attracted is her older brother Jacob. With an institutionalized father and a mother neither sibling has seen for years, Jacob provides for the household through his trade in meat declared unfit for human consumption. This situation has sufficed for years but the dedication with which Jacob watches over his little sister leaves her no room to mature as a woman...