Brittani McAlpine was working at Chili Pepper's Tanning on John R. when she saw a white sport utility vehicle lose control and had toward a woman walking by the window.
"I heard her scream, she kind of threw up her hands, tried to turn the other direction, to get out of the way," McAlpine said. "She wasn't so lucky.
"The car comes up into the store and I see her flying. And she just lands in our store, glass everywhere. The noise was so loud. It was the biggest boom ever.
"I freaked out and made sure she wasn't stuck under the vehicle."
McAlpine said that the woman said "Please help, it hurts."
Police suspect the 77-year-old driver may have suffered some kind of medical condition but that is still being investigated. The pedestrian is in stable condition.
The elderly driver and her passenger were taken to the hospital - along with the 56-year-old woman who was hit.
The victim's brother rushed to the scene and said she broke her ankle, has a large cut on her leg but says she will be okay.
"It was blessed that she didn't sustain ... she's injured but it could have been worse," said Robert Elwart.
The owner of the building said nothing like this has happened in the last 45 years.
McAlpine said that due to how some drivers speed through the parking lot, it was only a matter of time.
"People drive so crazy in and out of here all the time," she said. "They're careless, they don't pay attention."