but public defender don grudder said della rosa was a loving mother until mental illness took over her life causing numerous suicide events in the months leading up to this incident. she said she didn't get the treatment or the medicines she desperately needed to be healthy. a defense psychologist said della rosa was delusional the night of november 29th. he said her severe, depressive disorder caused psychosis and that she did not understand the nature of what she was doing. you know, we've often heard people say about this case that oh, she must have been insane for a grandmother to do something like that. but there is a very narrow legal definition. they must find that carmella della rosa did not know what she was doing the night she tossed her granddaughter off that sky bridge at tysons corner center. given the videotaped interview of della rosa that night where she talks about what she did and why, it is going to be very difficult for that jury to come up with a decision. but when they do, we'll have it for you live. i'm peggy fox reporting live. back to you, j.c. >> thank you ver