Given Sofonisba’s 1554 Dominican Astronomer (signed and dated upside down), her nonconformist, voluptuous 1559 Virgin Mary (signed and dated) and her 1578 Madonna dell’ Itria, documented by her official bequest to the monastery (disputed for years as beyond her style), one cannot deny Sofonisba’s range, and the reason Vasari uses the term invenzione to describe her.
Which Renaissance artist signed a painting upside down? A 24 year old female from Cremona painting a Dominican astronomer doing mathematical calculations 80 years before Galileo’s trial. That ‘s invention, Vasari’s invenzione.
Sofonisba was not a copyist. Coello was. He copied her work over and over. But that’s another story. Sofonisba cannot be contained in a little box in which tradition wants to put her.