Stacy Lynn Klostermann, 40, of Quincy, IL, passed away at 7:37 am Monday, September 21, 2020 at Blessing Hospital in Quincy. A funeral service will be at 11:00 am Friday, September 25, 2020 at the O'Donnell-Cookson Life Celebration Home in Quincy. Pastor Jeff Corson will officiate. Burial will follow at Greenmount Cemetery in Quincy. Friends and Family are invited to Stacy's Life Celebration at a visitation that will be Thursday, September 24, 2020 from 5:00 pm to 7:00 pm at the O'Donnell-Cookson Life Celebration Home in Quincy. Stacy was born November 15, 1979, in Seguin, TX to Gerard Klostermann and Sheila Cook Crabill. Survivors include one daughter, Emily Klostermann of Quincy, IL; one grandson, Lux Klostermann; her mother and stepfather, Sheila and Scott Crabill of Quincy, IL; her father, Gerard Klostermann of Highland, IL; her grandmother, Wanda Cook of Quincy, IL; one sister, Lacey Higgins of Quincy, IL; two step-sisters, Kristin Crabill of Quincy, IL and Ciera Crabill of Quincy, IL; one brother, Elmo Higgins of Quincy, IL; one step-brother, Cody Crabill of Quincy, IL; one nephew, Zay Higgins; and numerous aunts and uncles. Stacy was preceded in death by her grandfather, Walter Cook and one nephew, Kayden Higgins. Stacy graduated from Quincy High School in 1997 and went on to attend Vatterott College. She later worked at Walgreens as a pharmacy tech. Before being diagnosed with Mitochondrial Disease, Stacy enjoyed being with her family and friends. She enjoyed roller skating, dancing, and spending time with the people she loved. She loved babies and any time anyone needed a babysitter, she was the first one to volunteer. After being diagnosed, Stacy made it her mission to make everyone aware of this rare, life-altering disease. She was proud to know that she was honored when Mayor Kyle Moore made a proclamation for Mitochondrial Disease Awareness Month in the city of Quincy in September of 2018. Stacy grew a large support system of "Mito Sisters", who all became like family and shared their happiness and struggles together as one. She lost some "sisters" and some she's left behind to continue the fight, which they promised to do. Memorial contributions may be made to the family.