Ms Hawkins, who admits she was drunk and arguing, said she does not remember the actual blow, just the blood spilling on her hands afterwards.
"It was so much blood; I was cupping my hand and it was filling up and I just didn't know what to do with it," she said.
Video footage shows Ms Hawkins in the back of a car with blood streaked across her face, leg and hands.
Ms Hawkins said she didn't feel any pain, but was in shock after the incident which happened in May.
Police have charged the driver — who no longer works for Uber — with assault and he will face a Perth court later this year.
Ms Hawkins went public with the video because she said that Uber had not responded to her complaints.
"I am just really annoyed they haven't got back to me and haven't been concerned for me at all," she said.
Uber told Seven News safety was paramount for passengers and drivers.
An Uber spokeswoman said violence was not tolerated by the company and the driver's access to the app had been removed.
"Our community guidelines clearly reject any inappropriate and disrespectful behaviour," she said.
"The safety of our riders and driver-partners is a top priority.
"Uber's incident response team is available 24 hours a day, seven days a week to respond immediately to any reported incidents or accidents globally."