Majchrowski recalls the day in question, revealing that her neighbour's dog Mitzy had followed her children to their property before a bylaw officer showed up and handed her a ticket for having the dog off a leash.
After explaining the situation the bylaw officer went over to dog owner Norm Nixon's house and issued another ticket.
"I assumed he took the ticket for the offence," she said. "I know he paid the ticket, that I know for sure."
For 20 years Majchrowski never had a reason to think back to the incident - having never received any letters or phone calls regarding the fine.
But just last week that changed when she received the $243.25 fine with a message threatening "further enforcement" if the fine wasn't paid.
CBC contacted the city of Barrie, which issued the fine, asking for an explanation, receiving a statement saying the city couldn't "speak to this specific individual's situation, however, there are no time limitations on provincial offences or court-ordered fines".
"Individuals should be aware that any outstanding fines they may have never ceased to exist and also survive bankruptcy."