A mum and former beauty queen died after falling in front of a van outside her children's primary school during a row with another parent.
Robyn McHale, 28, died six days after being airlifted to Royal London Hospital in a critical condition from outside Forres Primary School in Hoddesdon, Hertfordshire.
An inquest into her death heard how just moments before the collision in February last year, she had been involved in a heated argument at the school gates.
Ms McHale was heard shouting "you f****** grass" before running towards another mum, Tara Jarmin, with her arms flailing and starting a tussle.
The inquest heard she had blamed the other mum after headteacher Sue Camp called the single mum-of-three into a meeting to discuss child car issues.
Robyn, from Hoddesdon, was said to have become "upset and angry" before storming out of the school and confronting the woman.