Rosetta's mother, who entered the dungeon with her and died on the first day, killed by goblins.
Rosetta's mother came into the dungeon with her and died on the very first day, killed by goblins. Her last words to her daughter were "Avenge us" — a charge Rosetta has carried through cycles in the dungeon, a career as a journalist and filmmaker, and her return to Faction Wars.
In this chapter Rosetta weighs that charge against the moment she decapitated King Rust and admits the truth: no amount of revenge will ever bring her mother back, and no matter how many orcs and orc children she kills, her people will still be dead. It is that realization that makes her ask whether there is grace in saying she has made her mark and it is time to rest.
The first loss of Rosetta's crawl and the source of the vengeance charge she has carried ever since.