Later that night, after she had retired for the night, Dolores was found dead in her bedroom by Annalee Webb, her throat having been cut. As William Pinkerton and Kate Warne went undercover to investigate Dolores' death, Dolores was revealed to have been a greedy thief in life, having been stealing money from the charity. She was also revealed to have a hidden connection to Freddie Sikes, a supposed orphan who was fundraising for the charity: he was Dolores' son, who she used in order to secure more ill-gotten money.
Prior to the episode's events, however, the evil Dolores told Freddie that he was now "too old" to earn enough money and that she was planning to find another young boy to use for the fundraiser and send Freddie to an orphanage. When Freddie angrily proclaimed he hated his callous mother, Dolores began to beat Freddie, which Freddie revealed in the present events was a frequent occurrence. Acting in self-defense, Freddie attacked his abusive mother with one of his ice skates, cutting her throat and killing her. Dolores' posthumous villainous reveal came after Freddie used some of her stolen money to buy Kate (who he had been bonding with) a necklace, with Kate later discovering the stolen money hidden in the lining of Dolores' clothing. She and William also learned that Dolores was Freddie's mother from a locket containing her and Freddie's pictures, leading Freddie to reveal his mother as an abusive thief that he killed in self-defense.
- With The Pinkertons ending after one season, Dolores serves as the series' final villainess.