Also known as Sarah, the illegitimate daughter of Mark Frettlby and Rosanna Moore. Lives in a boarding house where she takes a necklace after a friend's death. Later employed as Madge's maid. Her necklace triggers Frettlby's heart attack, revealing her true parentage. Receives a large inheritance and uses the funds to establish a women's shelter.
Sal is Frettlby's illegitimate daughter, a fact concealed for decades until the investigation uncovers it.
Sal serves as a critical informant whose stolen item helps Kilsip advance the case.
Madge and Sal are biological sisters, a hidden connection that adds emotional weight to the resolution.
Explore the full interactive character relationship map of The Mystery of a Hansom Cab