THE WASP " West End
Hampstead Theatre does it again with another powerful, thought-provoking transfer after last month's Four Minutes Twelve Seconds. Heather and Carla went to secondary school together about 20 years ago, live in the same town, but have little else in common. Heather comes from a stable, middle class family, is now married and lives quite comfortably. Carla is working poor, pregnant with her fifth child, and has a drunk…