FAIRFAX, Va. (WUSA) -- The mother of a 2-year-old girl cried as she testified about the night her daughter was tossed off a sixth-level pedestrian bridge at Tysons Corner Center by her grandmother.
Mary Kathlyn Ogdoc (Kat) had brought her 2-year-old daughter Angelyn to the mall last November with her parents, including Angleyn's grandmother, Carmela dela Rosa.
Prosecutors say dela Rosa killed Angelyn out of hatred for her son-in-law for getting her daughter pregnant out of wedlock.
Defense lawyers, meanwhile, argue that dela Rosa was legally insane.
On Wednesday Ogdoc described seeing a blank expression on Dela Rosa's face after the incident.
Jurors heard a videotaped confession from Dela Rosa on Tuesday. They also saw surveillance video showing Dela Rosa throwing Angelyn off the walkway.
Dela Rosa could get the death penalty if convicted.
Kat Ogdoc said her mother, father and brother, and Angelyn, were leaving the food court on November 29th. Ogdoc said she held the door for her mother and Angelyn.
Ogdoc cried as she described the details of what happened next... she said she turned about and saw that her mother
"had picked up Angelyn... I turned around again, since we were on a bridge, and I saw her by the railing, but I didn't see Angelyn. Her hands were out and over the railing. I said, 'What just happened?'"
"My dad and brother turned around and we ran down six flights of stairs to where Angelyn was."
"There were other people who were already there. They told me not to touch her. They blocked her. They wouldn't' let me touch her."
"I looked up and I saw her, the defendant, leaning over the rail. She didn't have any expression on her face. She had her hands on the railing and just leaned over."
Kats tearful testimony had jurors crying as well, but not dela Rosa.
Then, Kat Ogdoc's father, Leandro dela Rosa took the stand and told the defense attorney that Carmela Dela Rosa had been a good wife, and that he could never imagine she'd do anything like that because she loved the baby.
But he also admitted that his wife was taking anti depressant and attempted suicide four times.
He admitted that leading up to the incident last November, she'd grown increasingly withdrawn, erratic, and even violent... including one time when she pulled a knife on her husband.
Leandro dela Rosa said that there had been a recommendation that his wife be put in a mental hospital. But they chose outpatient therapy instead because it was cheaper, he felt it would work, and because he felt there is a stigma to being hospitalized for mental illness.