Theresa Lopez - Fitzgerald Winthrop is a fictional character and the main protagonist from the NBC/DirecTV soap opera, Passions. She was portrayed by Lindsay Korman throughout the program's tenure, with Priscilla Garita temporarily assuming the role from August 30–September 28, 2004, while Korman was on maternity leave. On December 31, 2001, and January 2, 2002, Alyse Gregory portrayed Theresa in flashbacks. Taylor Balen portrayed Theresa in another flashback in 2005.