After four years of secret meetings, stolen moments and public hand signals, Memmo finally urged his family to petition the Venetian authorities for permission to marry Giustiniana.
As the process dragged on, the lovers grew hopeful that they would indeed be united; but just as the request was about to be approved, evidence surfaced about the dishonorable past of Giustiniana's mother, Anna.
Anna and her five children then made their way to Paris with the hope of continuing to London where they thought to start a new life in Sir Richard's native land.
Following Memmo's advice, Giustiniana worked to become acquainted with Paris’ tax collector general, the wealthy widower Alexandre Jean Joseph Le Riche de La Pouplinière.
Giacomo Casanova, notorious Venetian and famed lover of women, detailed his interaction with Giustiniana in his memoirs, The History of My Life.
In it, he describes how he tricked her into allowing him sexual intercourse by convincing her that doing so (with saffron and honey smeared on his phallus) would discharge her unwanted fetus.
Giustiniana's disappearance during this time sparked many rumors throughout Paris and then Venice, and eventually led to the end of any marriage plans with M. de La Pouplinière.
She never remarried and began to write stories, the first an account of a major celebration in Venice, the second a compilation, and the third a novel in French titled Les Morlacques.
Upon his untimely death, his son, Andrea di Robilant, researched the letters and eventually wrote the historical work A Venetian Affair, published by Knopf in 2003.