Fifty years after the war's end, she described being deported in 1942 at the age of 3, surviving two concentration camps, first at Traunstein (Dachau) and then at Ottenhausen (Struthof), writing of that time:[2] We worked in the fields every day.
Koczy created a community art school outside of Geneva in the 1970s and in Croton-on-Hudson, New York, where she taught privately over the last twenty years of her life.
After 1995 she gave free lessons to elderly and disabled residents of Maple House in Ossining, where she supplied materials, arranged shows and acquisitions (many by her and her husband).
[7] Concentrating upon tapestry, she mounted two solo museum exhibitions in Geneva (1970 and 1979); she produced more than seventy fiber works in fifteen years.
In her later years Koczy insisted they be shown only accompanied by a statement in English, French, and German which begins: "The drawings I make every day are titled 'I Weave You A Shroud.'
The combination of ceaseless proliferation and searing emotion made an impact that struck to the very core of human feeling.Thomas Messer wrote:[14] Koczy's art, in the last analysis, speaks to us through formal authority and through convincing resolution, leaving us thereby in a state of catharsis, uplifted and hopeful.