Park theatre, LondonPainter Lee Krasner's rivalry with her husband is laid bare in an affecting play about a relationship both loving and riddled with hostility Art history is littered with stories of female artists dismissed as the lovers, muses or wives of the "great men" they lived with, from sculptor Camille Claudel, eclipsed by her relationship with Auguste Rodin, to the photographer-painter Dora Maar, by hers w…