MEEKER, Oklahoma -- A 2-year-old girl was found dead inside a vehicle outside the Tender Care Too day care in Meeker after being in the car for more than six hours, authorities said.

Sarenity Morse said she found her daughter, Atrinity Hasbell, inside the vehicle when she arrived to pick her up from day care Wednesday afternoon.

"I looked back in the backseat and she was just sitting there in her car seat, and she was all stiff and stuck to her car seat, and her lips and nose were black and she was all covered in sweat," Morse said.

Morse said her roommate arrived at the daycare with her own children and Atrinity. According to Morse, the roommate brought her sons inside the day care, left the van there and walked down the street to her job. Morse said the roommate forgot Atrinity was in the back of the van.

"I don't blame Jessica," Morse said. "I know she didn't do this to me on purpose. I know she cares about me. I know she loves Atrinity."

Morse said losing her only child should serve as a reminder for other parents now that summer is around the corner, words that were echoed by Atrinity's grandmother.

"Accidents happen; it's something that's terrible," said Arettia Bjorkdahl, Atrinity's grandmother. "She's a beautiful little girl. She was really smart and had an unbelievable future ahead of her. I guess I feel better knowing she's with God."

Meeker's Chief of Police, Don Conner, said he's asked investigators with the Lincoln County District Attorney's Office to assist with the investigation.

"They're talking with witnesses tonight and will be for the next few days," said Meeker Police Chief Conner.