Phyllida Lloyd, best known for her work in the London theater scene, and especially for directing jukebox musical Mamma Mia! and its subsequent film adaptation as well as the Meryl Streep-starring Margaret Thatcher biopic The Iron Lady, scales down her canvas with low-key, Dublin-set drama Herself.Her key collaborator here is Clare Dunne, an Irish actor who's had key roles in Lloyd's all-women productions of Julius Caesar and Henry IV, starring as a working-class Dublin mother made homeless