THE SETUP of writer-performer Constance Dejong and Tony Oursler's performance Relatives is simple: a large boxy television sits on a stand at center stage, flanked by two stools. As the TV plays a video created by Oursler, DeJong delivers a fragmented monologue, gesturing to the screen as one would a PowerPoint presentation, or a friend, following its movements, touching its surface, talking to it, finding in it familiar faces of relatives, real and imagined: DeJong’s great-grandmother, mother, uncle, older sister, and younger sister, all representations of family buried just under the glass,