Quinn Shephard's mean girls psychodrama 'Blame' loses focus

If the teen psychodrama “Blame” can feel a bit hastily rendered, that’s because, according to 22-year-old writer-director-star Quinn Shephard, the tyro filmmaker was rewriting her script (first penned when she was 15; her mom, Laurie Shephard, shares story credit) “right up to the start of principal...