"Mother Play," though based on Vogel's own life, is her most schematic, more an outline barely fleshed out with lots of details rather than the intense emotional revelations of her earlier works such as "How I Learned to Drive" and "Indecent." The chronological span of the play precludes anything but a quick portrayal of a procession of life-changing events in the Herman family and the rest of the world. Only Mar…