SHAWNEE, Oklahoma - A 25-year-old woman is clinging to life after being hit by a car.

Police said the driver slowed down but never stopped.

Now, investigators are actively looking for that driver who left the scene of the accident.

"She didn't deserve this, she didn't deserve to just be hit and left there," Danielle Krause said about her sister, Kristain Petry, 25.

Petry has been unconscious since the car struck her on Harrison Avenue near I-40 in Shawnee, Saturday evening.

"My biggest fear is that she is not going to make it," Krause said," how can anybody just hit somebody and just leave them laying there, how do you do that? "

Investigators are trying to figure that out.

Shawnee Police Detective Jason Crouch said a witness described the vehicle that hit Petry as a white 90's model car, possibly a Chevy Lumina.

"They said they hit her and then the brake lights came on. It looked like they were going to stop and pull over to the side. Then, they sat there for a second and turned the corner and never saw them again ," Crouch said.

Crouch is now reviewing surveillance video from the area to get a better look at the driver but he encourages that person to come forward on their own.

Krause said she will also be searching for answers at the scene and asking the driver to do the right thing.

"Please just come forward and turn yourself in, if that were your sister, if that were your family you would want the same thing," said Krause.

If you have any information about this case you are asked to contact Shawnee Police at (405) 273-2121.