Shortly after Delilah Copperspoon's coup d'état, Sarah decided to leave Dunwall off to find her fortune in Karnaca - meanwhile leaving her children in the care of her sister, Bethy. However, things didn't go as planned, and Sarah's silence angered her sister, who was already fed up of the decaying state of Dunwall and her nephews, who she described as surprisingly "sickly" and "poor behaved".
By the time Corvo Attano or Emily Kaldwin reaches the Aventa Quarter District in their quest for eliminating the Grand Inventor Kirin Jindosh, Sarah and another woman plotted to rob the black market shop in Lower Aventa, blowing up the the already-fragile back wall with some whale oil tanks. Despite not knowing anything about explosives, Sarah was charged to find the oil. Unbeknownst to them, in their coming and going the two burglars were spotted by a beggar living nearby.
Nonetheless, Sarah didn't manage to bring all the oil tanks required, angering her partner in crime. Despite that, Sarah promises to go out again and find another one later, but remarks that they can't wait forever, conscious of the risk of being spotted by someone or by the Howlers. Unless disturbed, the two burglars will be hanging around in the basement behind the black market; otherwise, they will turn hostile.
- Sarah and her partner are the only characters in the game under the class of "Burglar".