"It's not easy for such small places, beyond rates documents, there's not a lot," she said.
"It's quite understandable that someone wants to point this out but why don't they come to us instead of writing on the sign?"
Allan Farley, who wrote the new script for the sign, agrees there are more constructive ways to request changes on heritage signs.
"Yes, it is difficult to make corrections through formal processes as there is a certain system to follow," he said.
"However, there has recently been a change in leadership at the community trust committee.
"There's a new chairman who should bring about some good change."
There have already been a few heritage signs that have recently been replaced or corrected by the committee, to provide the community with more accurate historical accounts of the sites.
Mr Farley believes the history of small towns is mostly well documented.
In the case of the correction of the Samuel Oats Gum Tree sign, he says there were many accounts of the incident that were used to verify the corrections made by the vandal in 2013, including notes from Joseph Masters, who met Oates on his journey.
"Heritage signs should provide the truth but must also keep the information short, simple, and interesting," he said.
Allan's brother, Ian Farley, is a Greytown Community Heritage Trust Committee member and installed the new sign on Saturday.
"I think people in the community know that there are some glaring mistakes or misinterpretations on some heritage signs," he said.
Regarding the vandal who defaced the sign, he said "a friend of mine once said, "it'd be like a teacher breaking into a school kid's home and correcting their work".
While vandalism is not encouraged, it is acknowledged that the corrections have been made for the better of Greytown's historical integrity.