Zinah's sister testified she saw changes in her mothering

Zinah Jennings' sister, Denise testifies Thursday

COLUMBIA, SC (WIS) - More testimony Thursday from people who were closest to Zinah Jennings who say they saw profound changes in her behavior late last year.

Changes that happened in the weeks before Jennings' 18 month old son Amir disappeared without a trace.

Jennings has been on trial for four days now the charge, unlawful conduct toward a child.

Among the latest witnesses, the defendant's older sister Denise Jennings.

She said at first, Zinah appeared to be a devoted mom. But Denise said something seemed different later.

"When he was first born, she was just an absolutely a doting mom," Denise Jennings told the court.

"And I could see that characteristic. She didn't do anything harmful to him. As a matter of fact she talked about how he was the joy of her life and the only joy of her life." she said.

"She loved him," said Denise Jennings. "But I didn't see the, you know, changing of the diapers and the feeding and the doing I had noticed early on. That was gone."

Another witness, also one of Zinah Jennings' relatives, said Zinah showed up at her house on Christmas Eve. The witness said Zinah Jennings had just gotten out of the hospital after crashing her car.

The witness says Jennings told her Amir was with Denise Jennings in Atlanta.

But when the relative called to confirm the story, Denise Jennings told her she hadn't seen Amir since November 17th.

Amir Jennnigs remains missing. If you know anything that can help investigators, call Crimestoppers at 1-888-Crime-SC.