She had endured nine medical procedures during her lifetime so far, with an eight-hour surgery to reconstruct her feet when she was aged about 1-year-old.
Viewing the range of bikes on offer, Roxy stood against the wall measuring chart, as tall as she could, and insisted she was more than capable of handling a serious bike.
"I'm not little," she declared, disdaining the plastic toy trikes.
After the measurement, Roxy spotted the only possible prospect -- a Frozen-themed bicycle.
"Thank you," she said to Mr Hamilton, shaking his hand after he had lowered it from the shelf.
"You're welcome," he replied.
Ms Anderson said Roxy knew she was getting a bike that day and had been very excited.
"She never had a two-wheeler before," she said.
"This is going to be awesome for her legs."
The Times-Age had reported how Ms Anderson had started a Givealittle page to help pay for a second pair of expensive orthotic footwear for winter, a home-use walking frame, and swimming and ballet lessons.
The story was run nationally in the Herald, attracting Mr Tindall's attention.
Mr Hamilton said it went all the way to Mr Tindall, "and it came back from him, can we help out.
"It was pretty neat to get his attention."
The donation was possible via the store's bag programme.
Mr Hamilton said people pay 10 cents if they want a plastic carry bag.
"We don't take any of that -- it goes back into the local community," said Mr Hamilton.
To donate to the Givealittle page, go to givealittle.co.nz/cause/help4roxy
