Her husband took whatever jobs he could find, including working as a bartender on and off, a lot of the time in Florida, where the family often moved to during the winter in order to find work. During the Second World War, he found work in the war driven factories of Bridgeport, Connecticut. For many years the couple lived in the city's East Side, near the General Electric plant. Oscar died in 1989, at the age of 90.
The couple had three daughters (Monique, born in 1927; Evelyn, born in 1929; and Renee, 1940-2008), the first two of whom are still living near where she lived in Connecticut today, while Renee is buried next to her parents in West Cemetery in Madison, Connecticut. At the time of Marie-Rose's death she also had six grandchildren, nine great-grandchildren and one great-great-grandchild.
Her health was extremely good for someone of her advanced age, as shown partly by the fact that she was well enough to not need to be in a nursing home or medical care facility as many supercentenarians do (though other recent examples of this are Maria de Jesus, a Portuguese supercentenarian and the world's second-oldest person at the moment, and María Capovilla, a former world's oldest person from Ecuador). Her hair was thick and gray, and she didn't need to bother taking prescriptions day after day.
She was still sharp and her fingers were still capable of threading needles and doing the needlework she enjoyed passing the time doing. Most of all, she loved to read magazines. According to her family, she spent a lot of her time gently and slowly thumbing through one of the many magazines she kept by her easy chair. When she was not doing that or needlework, she often sat in her chair and looked out through the window at the picturesque wooded backyard.
There was no TV in her room. Dederer said: "At nursing homes, they dump them in front of the idiot box." She definitely appeared to enjoy her quiet everyday regime and her life. She had become somewhat of a local symbol, as Connecticut Governor Jodi Rell declared her last birthday the Fourth Annual Marie Rose "Muzzy" Mueller Day. She died peacefully in her sleep.