NEW YORK (AP) — A co-founder of an embattled upstate New York self-help organization is expected to plead guilty in a case featuring sensational claims that some followers became branded sex slaves.Nancy Salzman is due in federal court in Brooklyn on Wednesday afternoon for a plea hearing. There was no response to a request for comment from one of her lawyers.Salzman was a co-founder of NXIVM, a cult-like group based near Albany.