Grandpa Sues Grandson, 13, Over Crash That Killed Grandma Grandmother had given grandson her keys By Evann Gastaldo, Newser Staff Posted Sep 26, 2016 3:06 PM CDT 58 comments Comments File photo of an unrelated minivan on display. (AP Photo/Lenny Ignelzi, File) (Newser) – On the evening of March 26, Kuem Soon Cho, 79, gave her 13-year-old grandson her minivan keys so that he could help her put the minivan in gear in a parking lot on the block where she lived. (Multiple reports don't make it clear exactly what they were trying to do.) The teen put the minivan into reverse, then accidentally pushed the gas pedal instead of the brake, police say. Cho was approaching the driver's side door when that happened; the minivan hit her, and she was pronounced dead at a nearby hospital in a suburb of Chicago. Now, her husband Paul Sang Cho—the boy's grandfather—is suing the teen over the crash, CBS Chicago reports. The male Cho has filed a wrongful death lawsuit, alleging that his grandson was negligent and careless when he failed to keep the minivan under control, failed to give warning of what he was doing, and failed to yield the right of way. He's suing for an unspecified amount of money. An autopsy had ruled the female Cho's death accidental.