Who is Lowenna in the book, J: A Novel?

Lowenna Morgenstern is a gorgeous, young woman who has always caught the attention of men. She is sexually promiscuous, sleeping with all the men she can even though she is married. She is murdered, along with her lover and her husband, early in the novel. Her murder essentially becomes a red herring to the rest of the novel, as it serves to get Gutkind involved and as it seems to signify that tensions are at a breaking point. Long repressed natural tendencies are coming out in violent ways, such as murder.