She lost hair and suffered severe bruising from the incident, and said she was confused afterwards. But due to losing consciousness she was unsure - and in disbelief - that it had even happened so did not report it.
"I was ashamed and don't take sympathy really well. It wasn't until I saw it in the newspaper two weeks later that I was able to put the pieces together."
Police say the incident was not reported until the person who had rented the vehicle returned the car to the rental company, which contacted police.
Police released photos of the damaged car and appealed for the victim to come forward.
"I had a few drinks with my dad a few hours before the accident and was walking to meet a friend in the city. I crossed the road, I checked and no one was coming and then the car just hit me."
The accident happened about 1.30am between the Mobil service station and Larch St and Ms Foster-Chambers said she could hear cars driving past as she lay on the ground.
"It felt like one whole side of me was crushed and then I hit my head.
"I was knocked out on the road and woke up again, but I kept knocking out.
"I crawled to the other side of the road and knocked out and fell asleep in the drain.
"Heaps of people were just going past, I was just thinking, 'Someone help me please'."
One man stopped in his white van and took the woman home.
Police were still appealing for the good samaritan to come forward, but praised other members of the public who led them to Ms Foster-Chambers.
A 25-year-old man appeared in Auckland District Court this week charged with careless driving causing injury, making a false statement to police and failing to stop and give help after an accident.
He was granted interim name suppression and ordered to surrender his passport.
