I Am Searching for the Place and Date of My Grandmother Death Filippa Collana

Born in Ravanusa Italy around 1886?. married Gaetano Sicurella. moved to Tunisia by age 14. had 5 children. Antonio, Angela, Calogero, Salvatore (my father) and Grazia. She may be buried in Tunis or France. I remember seeing her at my departure in May 1954 from Tunis to the USA.