I'm the new General Manager for my company located in Akron, OH. One of my employees has complained about sexual harassment. She was having an affair with her supervisor. With that ending she's having an affair with a co-worker. She also mentioned she was released form rehab for alcoholism. A supervisor from an other depart joins this employee and a few others telling lewd jokes. She got offended by the supervisor's joke and threatened to sue. What should I do?