Kelly testified that in 2006, Danieal, who had cerebral palsy and could not move around or care for herself, was losing weight and becoming increasingly incommunicative.
The night before Danieal died, Kelly said, he tried to give her water and begged his mother to call an ambulance.
Kelly said Andrea Kelly refused: "She's just sick, she'll get over it tomorrow."
Kelly said he woke the next morning and "heard her [his mother] crying. I already knew what happened."
Kelly described a childhood of constant deprivation at the hands of a father who seemed not to care about his children and a mother unable to care for them or her eight other children.
Daniel Kelly Sr., 40, is charged with child endangerment for leaving his children with his ex-wife, whom he knew had neglected them before.
Two others are charged with failing to provide at-home social services deemed vital for the safety and health of Danieal and her siblings and then lying about it.
Dana Poindexter, 54, a former intake social worker for the city Department of Human Services, was supposed to investigate child-abuse complaints, verify them, and, if true, start the process of getting services.
Mickal Kamuvaka, 62, was cofounder and chief administrator of MultiEthnic Behavioral Health Inc., a now-defunct DHS contractor assigned to monitor the health and safety of Danieal and the children who lived with Andrea Kelly.
Andrea Kelly, 42, has pleaded guilty to third-degree murder and is serving 20 to 40 years in prison.
Daniel Kelly Jr. was the first witness Tuesday as the prosecution resumed its case before a Common Pleas Court jury.
He testified in a soft monotone, staring at the tabletop as if in shock. He looked at his father only when asked to identify him by acting First Assistant District Attorney Edward McCann.
