She decided to name her husband's killers, a decision supported by her sister-in-law Rita Atria and antimafia magistrate Paolo Borsellino.

Aiello felt abandoned by her sister[4] and her magistrate and she took on another identity to protect herself and her family from the mafia's retribution.

The evidence given by Rita Atria and Piera, together with other testimony, led to the arrest of various Mafia members[6] and to an enquiry into the politician Vincenzo Culicchia, who had been mayor of Partanna for thirty years.

[4] When she stood for election to the Chamber of Deputies for the Five Star Movement,[8] because of threats from the mafia, she wore a veil to protect her identity.

[2] In 2021, during her mandate as Deputy, she graduated in political sciences at Università degli Studi eCampus with a final dissertation (« tesi di laurea ») in private law.