Martin and Ngaire Finnerty were convicted this month for stealing grocery items donated to the food bank and were sentenced to 100 hours' community work.
At the time, Capt McGregor was worried the community would stop donating to the food bank, thinking staff were "not looking after things".
However, the day after the Finnertys' court story ran in the Otago Daily Times, a donation of $1000 came in.
The donor simply said: "This is to replace what was lost".
Grocery donations have continued to trickle in over the past two weeks and regular donations of bulk items continued.
"We appreciate the support we have received," she said.
The Salvation Army also thought "justice had been done" and bore no ill feelings towards the Finnertys.
"I feel sorry for the impact on them now in the community that we live in."