the hearts of erin thompson's family, too, had toughened.nd justine who showed nun an almost child-like polka dot headband didn't look like a killer facing as much as 200 years behind bars. there she was. she watched investigators testify to a certainty that it was justine's pontiac grand am that crossed the center line. >> here you can see all this debris from the initial impact of the crash. >> slamming into erin's subaru so hard it was driven backward into the highway barrier and crash reconstructionists agreed. >> justine winters' car encroached into the northbound lane, striking mrs. thompson's vehicle. >> what evidence was there that justine had done it, as the law says, purposefully? investigators pulled the so-called black box out of justine's pontiac and analyzed the data and found another sign that pointed to suicide. she'd taken off her seat belt. the black box recorded speed, acceleration and braking and found that justine was accelerating, flooring it, so to speak, in the five seconds before the crash, speeding up from 81 to 86