After reading of her plight in the Otago Daily Times the Mobility Solutions Centre contacted her to say they would give her a free scooter.
Mrs Jack said just when her faith in humanity had been tested, she was astounded by the generosity of the company.
"I can't believe it ... that news was so unreal."
The South Dunedin widow, who nearly lost her leg a decade ago, had ridden her scooter across the road to get some groceries and have a chat with her friend.
However she left her key in the lock, and after leaving the dairy found her scooter was missing its keys. A search failed to find them.
"They must have been watching us ... it is unbelievable."
Senior Sergeant Mel Aitken, of Dunedin, said two teenage girls were seen riding the white scooter along Prince Albert Rd, where it was later found dumped over a bank at the eastern end of John Wilson Ocean Dr about 9pm.
Police were reviewing the shop's CCTV footage of the incident, she said.
One of the pair was described as blonde, wearing blue shorts and blue knee-high socks, while the other was described as brunette with a ponytail.
Mrs Jack said the pair were "little brats" and if she ever met them she would say: "Thanks very much for taking my means of transport."
Her son bought the now wrecked scooter four years ago and "I have had the time of my life on that thing", as beforehand she had to rely on family members for transport.
"When I got that scooter I felt like I was free."
She had taken her scooter as far as John Wilson Ocean Dr and Caversham and "you can go anywhere in them".
Mobility Solutions Centre office manager Sonya Cunningham said she was "disgusted" to read of the theft and destruction of such a vital piece of equipment.
"We are Ministry of Health subcontractors and go out in the community and work on all of the equipment that the people have to get around on, so we appreciate and understand what it's like to have a scooter disabled."
Parts were no longer available for the destroyed three-wheeler Fisher and Paykel scooter, so the company had given her a four-wheeled Invacare model.
The company said it would maintain the $800 navy scooter for Ms Cunningham.
"It is lovely," she said, while accelerating away.
She had never heard of people stealing scooters before, but the incident served as a reminder for people to remove their keys when leaving one unattended.
"Scooters are part of their life. If they don't have it they stay indoors and they don't go anywhere or see anyone."
