Thank you @Maat for clarifying the meaning. Yes, it is a nickname, for some individual who held a black marker and used it. Nicknames often have a story. If one asks those who have them, they are often tied to their name, character, an incident, a sympathy, an allegiance, or a coincidence; even a nickname generator may need some clues.It is written "gravissime", that is "very serious".
I have no idea for butternut, maybe just a nickname.
I am not sure what you'r asking.Then why should she get all the blame nonetheless as you suggested?