After three seasons in Houston, Andressa was traded to the Portland Thorns FC in January 2018. She missed all of Portland's pre-season games as she was playing for Brazil at the 2018 Copa América Femenina in Chile. Andressinha made her debut for Portland Thorns against Utah Royals FC on 28 April 2018, where she came on as a 64th-minute substitute for Celeste Boureille. On May 11, 2018, she scored her first goal for the team, a free kick that gave the Thorns the lead in their eventual 3-1 win.