- "Tear those bloody Frye twins apart and bring me their pieces!"
- ―Graves threatening the Frye twins, 1868.[src]
- "You ain't gonna take me down!"
- ―Graves during the gang war, 1868.[src]
Lilla and her sister Mildred were born into an upper-class family. Their parents soon noticed Lilla's propensity for violence and foul language, but attempted to raise their daughter as a proper lady nonetheless. Lilla, however, had ideas of her own.
After the death of her parents, Lilla earned a reputation as a fearsome criminal, as well as a skilled heavyweight boxing champion. Grand Master Crawford Starrick picked Lilla as one of the seven leaders of the Blighters, allowing her to lead the street gang in the Westminster borough after finishing her training with Maxwell Roth.
Lilla's sister relocated to Lambeth, but the sisters kept in touch with each other. Lilla used this connection to dispose of her victims' bodies, which Mildred would bury in Lambeth cemetery.
When, in 1868, the Assassins Jacob and Evie Frye arrived in London, the Blighters found their dominance over London threatened by the Rooks. Eventually, their influence in Westminster grew as Lilla's and the Blighters' diminished, leading to a gang war between the two street gangs.
Despite Lilla's reputation and skill, the Assassins managed to best her in combat, therefore killing her. After her defeat, control of the Westminster borough went to the Rooks, liberating the streets of London from the Blighters.