'Why couldn't they find her?' asks father of First Nations teen who died in Kenora, Ont.

Months after his 14-year-old daughter died, Marlin Kokopenace says he still has not heard from Ontario Provincial Police about the nature of their last contact with her, in the hours before she disappeared in Kenora, Ont.

AzrayaAckabee Kokopenace, of Grassy Narrows First Nation, was last seen walking away from the Lake of the Woods hospital in Kenora on April 15, 2016.Police had dropped her off there.

She was found dead two days later in a wooded area nearby. Provincial police said foul play is not suspected in her death, but the family has many outstanding questions.

• Unresolved: Case Closed or Murder?CBC investigates34 cases
• OPP continue to investigate death of Grassy Narrows teen
• Father of 14-year-old First Nations girl found dead in Kenora calls for inquest

Ackabee-Kokopenace's death is one of more than 30 cases that are part of Unresolved: Case Closed or Murder?a CBC News Investigation. It examines circumstanceswhere police say there is no evidence of foul play butthe families of missing and murdered Indigenous women continue to maintain their loved ones may have been killed.

"Why couldn't they find her?"MarlinKokopenace, the teen's fatherasked.

He also wants to know why have police been so reluctant to explain what happened on that night before she disappeared.

The provincial police refused to answer questions from CBC News aboutwhy they had contact with Ackabee-Kokopenace on April 15.

Police also would notcomment on the nature of an officer's altercation with Ackabee-Kokopenace one that was caught on video just weeks before her death, on March 26.

Police try to restrain Azraya Kokopenace in March, 2016

8 years ago

Duration 2:59

Police try to restrain Azraya Kokopenace in March, 2016

CBC News filed a freedom ofinformation request to the Ministry of Community Safety and Correctional Servicesabout the Ackabee-Kokopenacecase. It was denied on the basis that it:

• could reasonably be expected to interfere with a law enforcement matter
• could reasonably be expected to facilitate the commission of an unlawful act or hamper the control of crime
• the personal information [contained in the case file]is highly sensitive

As time stretches on, with no response from police,Kokopenace said more questions build up.

"We still don't have her toxicology [test results]," he said. "If someone gave her something [drugs or alcohol], we want to know if they could be charged."

There's also the question of why a girl, who had only just turned 14 in March, was allowed to walk away from the hospital in the first place.

• 'Everyone failed her,' says aunt of First Nations teen found dead in Kenora

Friends and family saidAckabee-Kokopenacehad demonstrated suicidal behaviour following the 2014 death of her brother, CalvinKokopenace. He had died from complications of muscular dystrophy and mercury poisoning that is endemic in Grassy Narrows.

"If she was suicidal already, they should have taken anything from her" that could have been used for suicide, Kokopenace said.

The Lake of the Woods District Hospital did not respond to calls from CBC News about Ackabee-Kokopenace's case.

Coroner's investigation

"There are some substantial issues we're working through," said regional coroner Dr. Michael Wilson.

One of those issues is the fact thatAckabee-Kokopenacewas in the care of a child welfare agency at the time of her death, which automatically triggers a review by thepaediatricdeath review committee.

Kokopenace said he will not rest until he knows "the whole story" of how his little girl died.