Among those keenly listening was a grieving Daryl Chansuthus, whose daughter Hasaya "Seyde" died when her Chevy Cobalt hit a tree in 2009. Once again, the mother was moved to tears as Barra pledged to make GM cars safer.
However, Chansuthus pointed out that rather than take responsibility for the root cause of the car crashes -- the faulty ignition switches that shut down the vehicles -- Barra once again focused on the airbags that didn't deploy in the accidents.
That's because GM's list of 13 confirmed deaths includes only those in the front seat of cars whose airbags didn't inflate.
"The safety features wouldn't have been an issue in the first place had the car not shut down," Chansuthus said.
Laura Christian, another victim's mom, is skeptical of GM's efforts. Christian is birth mother to Amber Marie Rose, who died at age 16 in 2005 after her Chevy Cobalt crashed into a tree and the airbag failed.
Christian, a former federal investigator who has helped organize and connect families of victims, questioned the independence of the investigation that General Motors paid for.
"Can we really rely on their findings?" she asked.