Mary Barra, the CEO of General Motors, appears before a House subcommittee Tuesday to answer questions about why her company failed for 10 years to tell the public about a fatal flaw in the ignition system of hundreds of thousands of GM cars.

In Kennesaw, Ken and Beth Melton are marking the fourth anniversary of their daughter’s death in one of those GM vehicles. That day in March was also the 33rd anniversary of Brooke Melton’s birth — she was killed on her birthday, while driving to meet her boyfriend to go out to dinner to celebrate. Melton, then 29, was traveling down Ga. 92 in Paulding County when her 2005 Chevy Cobalt simply shut down. The car drifted into the oncoming lane of traffic and collided with another vehicle.

The Meltons went to the hospital as soon as they heard, but Brooke was dead when they arrived.

“I whispered in her ear that I loved her, that I would miss her forever,” Ken Melton said. “And then I said, ‘I will vindicate your death.’”

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