Mary Ann (Ratkovich) Stack, 84, of Lakewood, Colorado passed away peacefully on January 15, 2013. Mary Ann was preceded in death by her husband, George Stack. She is survived by her children; Geri (Mike) Drinkard of San Jose, California, Sandy Christiansen of Denver, Frank Stack of Lakewood, Lisa (Charlie) Spence of Lakewood; 9 grandchildren; 13 great grandchildren; and 2 great great grand children; sisters Anna Mae Hambric of Lakewood, and Rose Marie Little of Aurora. Mary Ann was born in 1928 in Canon City, Colorado. She will be remembered as a fun-loving, outgoing spirit, with never-ending kindness, generosity, and love of family. Recitation of the rosary will be Wednesday, January 23rd at 7:00 pm at St. Bernadette Catholic Church, 7240 West 12th Avenue in Lakewood. Funeral Mass will be on Thursday, January 24th at 10:00 am at St. Bernadette. Donations in lieu of flowers may be made to the Colorado Cancer Research Program at 1720 South Bellaire Suite 701 Denver, Colorado 80222.