Valerie Wood-Harber's brother, Quinten, needed a lot of special care.
He was born with a rare chromosomal abnormality, which meant even as a teenager, he needed help doing things that most people take for granted.
Getting dressed could be a challenge. So could eating.
But Quinten was also a happy child, who loved water, hugs and the music duo Daft Punk, his sister said. He smiled and laughed about everything.
"Honestly, my biggest worry about him was that he was going to outlive the people that were able to take care of him," said Wood-Harber.
"That was my biggest fear. He was healthy."
Quinten Douglas Wood, 15, died on January 4.
A medical examiner's report lists his cause of death as acute pneumonia. The manner of death was ruled natural.
Despite the report, Wood-Harber, 28, says she has questions, and she's not alone.
Wood-Harber has started an online petition, calling for the governor to investigate schools and the Oklahoma Department of Human Services over her brother's death, which she says was caused by negligence.
More than 250,000 people have signed it.
Quinten passed away less than a month after Wood-Harber says she called DHS to report their father, who took care of Quinten and the boy's younger brother in Oklahoma City. Wood-Harber lives in Fayetteville, Arkansas.
In keeping with its policy following the death of a child when there is an open or pending referral, DHS initiated an investigation.
The department is working alongside the Oklahoma City Police Department, the Oklahoma Commission on Children and Youth, the Oklahoma Medical Examiner's Office and The Children's Hospital.
Their investigations are ongoing.
The goal is to find out exactly what happened, said Sheree Powell, director of communications and community relations at DHS.
Who knew what and when? And what, if anything, could have been done to prevent Quinten's death?
"I think the biggest thing we would like to emphasize right now is just how heartbreaking this whole situation is and that we're working very, very diligently to try to find justice for this boy," Powell said.
'Wouldn't live to see a year'
When his son was born, Michael Wood says that doctors thought he wouldn't live to be a year old.
Unlike his daughter, he recalled the various health problems his son suffered.
Wood, 47, said Quinten had so many ear infections that antibiotics rarely worked. He had been hospitalized at least nine times with pneumonia, and each time took its toll, he said.
A single working dad, Wood needed help to care for his disabled son. He said he went to DHS three times, starting in 2010, to ask for it.
"They bounced me to another department, and they said well, somebody will come out. And nobody ever came out," Wood said. "I finally said, forget it, I'll do it on my own."
"I'm not real big on every time I have a problem, go to somebody else to fix it," he said.