i haven't read it either! i mean, hecate could have warded the drivers away, but i think natalie would have tried her hardest to keep bystanders away from the bridge.

and also barricades are awesome, so mad respect, enjolras. she can help him out by trying to heal his arm - though her healing powers aren't as good as her explosions. so that's how she helped him fight the baddies, maybe.