A minicab driver has pleaded guilty to driving without due care and attention and failing to stop after a collision with a pedestrian.
Arthur Desborough, 87, from Northampton, was fined £633 and given eight points on his licence by town magistrates.
Desborough was tracked down after the mother of the victim took it into her own hands to check CCTV from local businesses close to where the incident happened.
Northamptonshire Police said the CCTV footage allowed them to identify the driver.
Amber was left with a fractured tibia after Desborough crashed his minicab into her while she was crossing a busy road in Northampton.
Amber's mother turned detective and tracked down CCTV of the crash after waiting a week for police to act.
The incident happened on 19 April 2019, but after leaving voicemails with police wondering what stage of their investigation they were at for a whole week, her mother rang local businesses to see if any had CCTV footage of the incident.
Within six hours of taking matters into her own hands, Amber's mother, Gail Thompson, got ahold of footage of the collision.
(Amber Carter-Thompson - Facebook)
She said it was "fairly disheartening" police had not contacted the shops as they said they would.
28-year-old Amber was crossing Wellingborough Road at about 23:00 along with a friend when the minicab drove into her and injured her leg.
(Amber Carter-Thompson at hospital - Facebook)
Police spoke to her in the ambulance and the following day she was told to expect a call on Monday or Tuesday, but it never came.
In a post on Facebook her mother pleaded with anyone in the area who may have seen the crash to come forward.
(Gail Thompson - Facebook)
She wrote: "Did anyone on the Wellingborough Road, Northampton, at about 10pm on Friday night see a minicab hit my daughter and drive off?
"She's now in hospital with a fractured tibia and has to have an operation to set it. Please share and catch this scumbag."
Thompson has now said the family can move on without holding any grudges.
Image credit: Facebook