She hoped her 3-year-old son, Zachary, would grow up in a world where rare cancers could be cured.
Born Eleni Doufekias, she left her hometown of upstate Marlboro to attend Cornell University, graduating in 1999 with a bachelor of science degree and then attending SUNY Upstate Medical University in Syracuse in 2003.
Faustina Kowalska painstakingly recorded Christ’s instruction in her diary that is a mystical manual on prayer and Divine Mercy.
"It was the thing she was most proud of, being a mother," he said.
In addition to her husband and son, she is survived by her parents, Zachary and Voula Doufekias of Marlboro; and sisters Spyridoula Adanuncio of Danbury, Connecticut, and Niki Dounis of Manhattan.
As a three-year resident in internal medicine at the New York-Presbyterian Hospital/Weill Cornell Medical Center, she met John Vavas on a Greek online dating site in 2006.
The man who would become her husband was at a law firm and also working long days.