TULSA, Oklahoma - Tulsa homicide detectives are trying to figure out who killed a 19-year-old pregnant woman.

Marshay Wesson was found in her car, parked on a street, like she'd gone to meet someone.

Wesson was the mother of a little girl and her due date to give birth to her son was July 25th.

Just a few hours before she was shot to death, she posted on Facebook how great her life was, how she had every reason to smile.

Wesson's Facebook page is all about her daughter Kenzi.

She talked frequently about her little girl.

She also remarked about how ready she was to give birth in July, since her nights were getting restless.

At 8 p.m. Sunday, she posted this, "I have every reason to smile...i have a wonderful daughter whos love is like no other she is the best...i start school june 12....ill soon have a wonderful son...i have my own car n place to stay...!!! Its all jus good lol ;)"

By morning, she was dead, found shot to death in her car. 

The car was parked in the 2800 block of North Wheeling near the Berean Missionary Church. Tulsa Police say the cause of death appears to be a gunshot. 

A neighbor drove by the car parked near the Berean Missionary Church and thought it looked suspicious. The neighbor approached the car, saw the woman's body and called 911.

Police say it looks like Wesson had been in the car for several hours before someone noticed.

"We think she knows the suspect knows here," Sergeant Dave Walker said. "It wasn't gonna be a stranger thing. It's in an isolated area. No sign she was forced to be there, no sign of an assault inside the car."

Detectives say Wesson was sitting in the driver's seat, and it appears the person who shot her was standing outside the car, which is where they found several shell casings.

They say Wesson lived in Sand Springs and left there sometime last night.

She did know people who live in the area where she was found, so detectives are now trying to trace her steps.

"If anybody knows her, or seen her last night or was with somebody or told somebody where she was going, we need that information," Walker said.

News On 6 went by Wesson's mother's home, and while no one was up to talking, there were cars lining both sides of the street and dozens of people paying their respects, a sure sign Wesson was greatly loved and will be missed.

Anyone with information about Wesson's movements in the last 24 hours, should call Crime Stoppers at 918-596-COPS. Your identity will remain secret and you could earn a cash reward if the tip leads to an arrest.