When Wong reached her home at Ming Teck Park, off Sixth Avenue, she noticed some dents and scratches on the left front bumper.
But she felt no urgency to report the incident and went to bed.
The police went to her home and towed the car away before 8am the same day.
Wong's brother called them later and was told by an officer to ask the driver to contact him. Wong then called the officer immediately.
Wong pleaded guilty to one charge each of inconsiderate driving, failing to stop after an accident and failing to render assistance after an accident. The prosecution appealed only the last charge.
She was fined a total of $2,400 - $800 for each charge - and disqualified from driving for a year.
Yesterday, Wong, who was accompanied by five friends and relatives, was visibly relieved and all smiles after the appeal was thrown out. She declined to be interviewed.
Wong had resigned after six years of teaching to look after her son, who was born in December last year.
For failing to render assistance after an accident, she could have been jailed 12 months or fined $3,000.
This article was first published in The New Paper.