Freya Evelyn Pattinson was found unresponsive and wasn’t breathing hours after going to bed at a “usual time” that evening, reports Manchester Evening News.
Freya’s inquest on Monday was told a family member found the youngster lying across her bed at a 90-degree angle, wedged between two cushions.
One pillow was covering her face, the coroner was told, causing an ‘upper airway obstruction’.
Freya’s mum Lisa Daniels attempted to perform mouth-to-mouth resuscitation until paramedics arrived, but the girl died later at Wythenshawe Hospital.
Manchester Coroners’ Court heard a ‘lengthy’ medical investigation followed, and a police probe was also launched.
A ‘very extensive’ toxicology report was carried out by forensic pathologist Kirsten Turner and samples of Freya’s hair were collected for analysis, following the death in January 2017.
Nigel Meadows, Manchester’s senior coroner, heard these samples were found to contain traces of cocaine and cannabis, which Ms Turner suggested could have come from inhalation; environmental conditions; or from coming into contact with the substances.
But Ms Turner said there was nothing to suggest deliberate inhalation by the child.
Following a post mortem, Freya was formally diagnosed with dystonic cerebral palsy, also known as dystonia or ataxic cerebral palsy.
The condition causes involuntary muscle contractions and can affect the whole body.
A post mortem report suggested it could have caused developmental delays and poor growth.
Recording an open conclusion, Mr Meadows said he was unable to confirm Freya’s cause of death.
“The reports have been unable to explain an identifiable cause of death,” he said.
“The medical cause is unascertained and an open conclusion has been recorded into her death.
“I offer my sincere condolences to Freya’s family and I apologise that it has taken so long for the inquest to be held due to the pandemic.”
Freya, from Sale, Greater Manchester, was described as an “adored, loved and cherished”.
Following the hearing, Freya’s mum Ms Daniels, on behalf of her family, said: “It’s been a tough few years.
“Every minute of every day that Freya was here, she was adored, loved and cherished by all her family.”