She was passionate about drawing and comics since childhood; before entering this career she lived as a housewife.
[1] She attended the School of Comics in Milan for three years, after which she published some short stories for Intrepido magazine, written by Mauro Muroni.
[2] In 1991, the publisher Stefano Trentini proposed her to draw stories about football, but she refused, not feeling attracted to the genre.
Trentini himself, three years later,[3] involved her in the project of the erotic culture and comics magazine Selen.
[citation needed] Casotto's stories were first published in the U.S. in 1994, in the series Bitch in Heat by the Fantagraphics imprint Eros Comix.