Peter Debruge Chief Film CriticThere’s a distracting practice in American cinema of casting actors who are already well into their twenties to play teens, although “Holler” contains one of the few examples in recent memory where an age difference of nearly a decade, while noticeable, works to the film’s advantage. Ruth, the resourceful Ohio high school student at the heart of writer-director Nicole Riegel’s raw-wound debut, has been forced to grow up too soon.