Mary Jo (Kelly) Duffey passed unexpectedly with family by her side on December 17, 2025. She was born to her late parents Leo and Mary (Anderson) Kelly on January 28, 1953, in Holland, MI. Mary shared 49 years of marriage with Dennis Duffey who passed in 2021. She helped found and operate Nature's Market in Holland, MI, then went on to manage at Oosting Furniture until retiring. Outside of work, family was everything to her, especially quality time and watching movies with her two grandsons.

She is survived by her children Brian (Sarah Huber) Duffey and Rebecca (Ryan) Miller and Cheryl Fett, siblings Kathleen (James) Dettling, Larry (Olga) Kelly, Christine Kelly, Diane (Kim) Slayer, and Theresa (Dan) Heorig; grandchildren Tristan and Liam Duffey; cousin Rose Stuck, brother-in-law Mike Duffey and sister-in-law Diane Lewis.

She is preceded in death by her husband Dennis Duffey and parents Leo and Mary (Anderson) Kelly.