"It is crystal clear," Lim said in his closing argument, that Tanya Williams made a conscious decision not to feed Quasir and his twin brother Quamir, who was hours from death when doctors at Children's Hospital of Philadelphia saved his life.
"What could be more telling than this? You mean, she's telling you she didn't know he was dying?" Lim asked, gesturing to Quasir's death photo projected on a large screen.
When Williams' defense lawyer, Gregory Pagano, turned the projection off, Lim dashed across the courtroom to turn it back on.
Williams, 34, continually dabbed her eyes. She's in custody without bail, four of her children are in foster care, and Quamir has been adopted.
Williams is charged with murder and child endangerment in Quasir's death and with attempted murder and child endangerment for Quamir's injuries.
Pagano told the jury that Williams did not intentionally harm her sons. Rather, he said, she was a stressed, homeless mother who was repeatedly failed by the system that was supposed to help families like hers.
Doctors at the Hospital of the University of Pennsylvania released her premature, 4-pound twins too early after their October 2010 births, the Department of Human Services prescribed the wrong level of care for the family and a caseworker from Lutheran Children and Family Service declared that Quasir was healthy just 36 hours before he died, Pagano said.
"If the educated and trained personnel assigned to her didn't notice, how could she?" he asked the jury.
In January 2011, Lutheran Children, a nonprofit that had a city contract to help the family, fired the caseworker and her supervisor.
On Twitter: @MensahDean