The four appealing actresses do their best to bring the characters to life. They generously give themselves over to sex scenes that must have been difficult to rehearse with straight faces. They find moments of humor and irony in the dialogue. Their warm performances assure us that there is a promising dramatic sensibility somewhere behind all this script’s meta-theatrical posturing. And the production, if a slog, does spark curiosity about the Bluestockings and their proto-feminism.