On June 29, 2011, paramedics found the boy lying lifeless and wearing only a diaper on the trash-strewn floor of a boardinghouse room where Batson lived with her boyfriend, Marcus King. She told police that Jaquinn had fallen down steps.
King pleaded guilty to third-degree murder. He was sentenced in October to 10 to 20 years in prison.
Jaquinn was at Children's Hospital of Philadelphia for two weeks before he died of a pancreatic laceration caused by blows to his abdomen, which prosecutors said had "the force of a car accident."
Jaquinn's death was one of the most horrific child-abuse cases in Philadelphia in recent years, Assistant District Attorney Bridget Kirn said during Batson's trial.
At Wednesday's sentencing, McDermott said that 99 out of 100 Philadelphians would agree that Batson's actions were pure evil.
Batson poured boiling liquid on the boy's feet, causing so much swelling that he could not wear shoes, according to trial testimony. She used a cooking blowtorch to burn the toddler's bottom as punishment for problems in potty training.
Autopsy photographs showed the 32-pound boy had scars, burns, and bruises all over his body.
Ashley Brewton, Jaquinn's mother, testified that Batson offered to care for the boy when Brewton moved into a homeless shelter with three of her other children.
Brewton told a social worker from the Department of Human Services that she lost track of Jaquinn after he went to live with Batson. Brewton said she knew the block in which Batson lived, but not the address.
A city review of the case found that DHS failed to take any action to find the boy and did not file a missing-person report.