In her youth, Case moved to Brazil in 1917 aged 18 with her then husband-to-be, Savino Petrone, owing to disapproval surrounding their relationship; Petrone, a native of Apulia, Italy, was a well-to-do businessman while Case was from a peasant family.
The pair married while in South America, and lived there for a further six years before returning to live in Apulia, Italy. They lived there for a further twenty-two years before taking residence in Castelfranco, Veneto, in 1945, where Case would live for the rest of her life.
She had a total of four children with her husband -- Maria, Teresa, Benita, and their youngest child and only son, Cataldo. Maria, the eldest, died in 1999.
According to a Italian source in translation, Case had a strong will and was never "intimidated by the fact that each year could be the last, and is very proud of her record".
Case, who was a housewife for much of her life, resided at Domenico Sartor, a retirement home, for the last sixteen years of her life, having moved there in 1995 at 96 years of age.
Case died on 17 August 2011, aged 112 years, 27 days, as the 49th validated supercentenarian to do so in that year. At the time of her death, she was the 31st-oldest living person and the third-oldest living Italian, as well as the 17th-oldest Italian on record; she has since been displaced to 18th place by Emma Morano-Martinuzzi of Piedmont, Italy, born 29 November 1899, and aged 112 years 63 days as of 31 January 2012.