The case was sent to crown court, where Ms Higson will face one count of causing Mr Coster’s death by dangerous driving.
Keen motorcyclist Mr Coster, from Accrington, Lancashire, treated casualties at Manchester Arena using his military first aid training and was called a “hero” at an inquiry into the atrocity.
He had served in Northern Ireland, where he had gained experience of blast injuries, and was able to apply tourniquets to victims.
He was also the person who closed the doors to the scene to protect onlookers from trauma.
After leaving the Army, Mr Coster worked in training and development for a road haulage firm and as a mechanic in professional motorsport.
A passenger in the car which struck him, a woman in her 80s, suffered a leg injury.
