Her strength and resourcefulness pushed her further: she wanted to become independent from her husband and realize her own projects, so, after quitting Astoria, she first took her pilot's license and then founded her own publishing house.
Driven by the lack of entertainment literature for "grown-ups", Angela founded Astorina and devoted herself to drawing, developing her first comic book, Big Ben Bolt, which, however, failed after only two years.
The marriage also came to an end and, after the divorce, Angela returned to her mother's house, where she started working with her sister Luciana (6 years younger than her), with whom she would create Diabolik, the comic book that would make them famous.
The name is not accidental but is closely related to a chronic fact of some years before: on February 25, 1958, in Turin, a Fiat worker, Mario Gilberti, was found wrapped in a sheet bleeding to death.
Although the murder weapon never appeared, several letters written in cryptic language were found at the scene of the crime, all signed "Diabolich", from which the name of the comic is derived.
At his side is Eva Kant, his life and adventure companion, who appears for the first time in the third episode, The Diabolik's Arrest (1963), and then becomes the protagonist of several succeeding issues.