Callum Dale, aged 13 and who had Asperger’s Syndrome, had left his home and died after he was hit by the vehicle driven by Rachel Fullerton on the outskirts of Buncrana, Co Donegal, in March 13, 2014.
Ms Fullerton, aged 35, has gone on trial at Letterkenny Circuit Court charged with careless driving causing the death of the boy.
Yesterday, Callum’s mother relived the last moments of her son’s life.
Deirdre Dale told how her son was a very smart boy and was “probably smarter than you”, as she pointed to presiding Judge John O’Hagan.
However, due to his illness, he was prone to having “eruptions” which would see him lose his temper.
On the night he was killed, Callum and his dad Peter had a disagreement and the schoolboy stormed out of his home at 10 Riverdale Park, Buncrana. He walked up the road and was carrying a poker.
His mother spent 45 minutes trying to reason with him and calm him down before tragedy struck. Both were wearing dark clothing and it was dark outside.
Ms Callum said her son had moved onto the road and she desperately tried to wave down the oncoming Volkswagen Meriva car being driven by Ms Fullerton close to Cockhill chapel.
Ms Callum said she could not recall if her son was sitting or lying down on the road before he was struck by the car.
The court heard the accused woman had not been drinking, had not been using her mobile phone, and was not speeding before the accident. Ms Fullerton, of Meentahalla, Illies, Buncrana, sat in the public gallery and became emotional throughout the evidence.
The trial is expected to last up to three days.