PORTLAND – Theresa "Terri" Marie Mack, 61, passed away on July 28, 2021. She was born in Portland on March 6, 1960, a daughter of Donald and Judy (Leighton) Delisle. She was the mother of Chad Mack. She enjoyed fun weekends with her son playing floor hockey, ice skating or watching him play hockey. She was survived by her son, Chad who she adored; mother, Judy; sisters, Robin & Mike Knaup and Pamela & Steven Gillingham; aunt Nat; partner, George; cousins, aunts & uncles, nieces, nephews and many friends. If you knew Terri you know that she loved cooking, talking on the phone for hours, playing Yahtzee and watching Ellen. She was predeceased by her father, Don; and grandparents, Charles and Alma Carson and Alice Shaw. A graveside service will be held, 2:00 p.m., Friday, August 6, 2021 at Brooklawn Cemetery, Portland.