HIGHLAND PARK, Ill. (CBS) – The allegedly impaired teen driver accused of striking and killing a 5-year-old girl on Labor Day may have run over the girl more than once, a lawsuit filed by the victim’s family says.

Jaclyn Santos Sacramento was killed Sept. 3 after the car Carly Rousso was driving crossed several lanes of traffic and onto the sidewalk, slamming into the child and her family. Rousso, 18, is charged with reckless homicide and aggravated driving under the influence in the accident that injured Jaclyn’s mother, Modesta, and two brothers.

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The fatal accident happened in the 700 block of Central Avenue in Highland Park. Rousso was traveling eastbound when the accident occurred.

New details have surfaced in a lawsuit filed against Rousso. It’s alleged she ran over the family but then “struck them at least once more,” potentially backing over Jaclyn in an attempt to flee.

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Family attorney Bob Baizer says a local high-schooler interceded and forcibly removed the keys from the ignition.

“It was completely instinctual and heroic,” Baizer says.

Rousso allegedly was “huffing” a cleaning product to get high, according to authorities and the lawsuit. Video from the night shows police eyeing a Walgreen bag. She had a chemical in her from a popular computer spray cleaner.

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The victim’s family has been overwhelmed by support following Jaclyn’s death, Baizer says. They’d hoped to raise $3,000 for a funeral and healthcare costs, but a fund has generated $75,000.