Antolini joined the anarchist movement in 1916 after having prior exposure to the newspaper
Cronaca Sovversiva through her brother Alberto, the same year she married her husband August Segata, a member of Italian rebel organization Gruppo I Liberi. It is through the anarchist movement that she met Carlo Valdinoci, who later became her lover. In 1918 Antolini was arrested for transporting dynamite to Chicago and spent six months in a prison in
Jefferson City, Missouri alongside
Emma Goldman and
Kate Richards O'Hare, who were imprisoned in the same facility. While in jail Goldman and O'Hare became friendly with Antolini, the latter of whom helped Antolini improve her English skills. While Antolini was in prison her husband Segata "vanished from sight" and was believed to have returned to Italy. Historians have no further information on Segata after this point. Following her release, Antolini moved to
Detroit, where she met and married a Sicilian man named Jerome Pomilia. The two had a son, Febo Pomilia. ==References==