"This is a tragic thing to happen at any age, let alone to someone who's aged 84," she said.
Meanwhile Ms Knowler, New Zealand's northernmost police officer, has used Facebook to track down three drivers responsible for a series of donuts and burnouts outside Houhora Big Game and Sport Fishing Club.
After seeing the mess on the main road outside the club's tidy grounds she appealed to the public for information via the Houhora police Facebook page. It is understood she was sent more than 20 photos of the incident, which occurred during a private daytime function on August 24.
The three drivers handed themselves in rather than wait to be tracked down. Each has been fined $600 for operating a vehicle in a manner liable to cause injury, damage or annoyance.
Ms Knowler commended the drivers for contacting her rather than making her waste time and energy looking for them.