Surveillance video of two 12-year-olds throwing a Target shopping cart over a ledge in East Harlem has surfaced, the Daily News reports, and it seems at least one teen tried to stop the boys—going so far as to take away the first shopping cart the tweens tried to toss. Unfortunately the boys just grabbed another cart, which they successfully got over the edge—sending 47-year-old UWS mom Marion Salmon Hedges to Harlem Hospital in critical condition.

According to the News, "Video obtained by the developer who built the East Harlem mall where Marion Salmon Hedges was nearly killed shows the teen wrestling a cart away from the dastardly duo and running off with it." The boys then raced into the mall garage for another cart, which they successfully tossed. "They grabbed it and threw it over in under 30 seconds," David Blumenfeld, who built the East River Plaza, told the tabloid. "This is a horrible, unfortunate incident. It’s unfathomable that someone would do this."

The identity of the teen who tried to stop the boys has not been released, but sources say he is also one of the ones who turned in the alleged culprits in the first place. That someone tried to stop them also jives with earlier reports from a witness that, "Their friend was trying to stop it, saying, 'Don’t do it!'"

Meanwhile, the grandmother of one of the alleged tween terrors decided yesterday to speak out about just how sorry her family is for what has happened. "I never thought he could do something like that," she said. "I don’t even know how to approach the family to wish them well," she said in Spanish at her Washington Heights home. "I want God to help this woman get better."

She also said her daughter, the boy's mother, had tried to reach him at Juvie, but "he didn't want to talk to her." Further, she insists her daughter was a good mother who "raised him well," as she had his 23-year-old half-brother, "who went to college and now has a good job." She says that "His mother was making sure he goes to school and keeps good company. She was always on top of them. She's a good mother."