A dedicated mum died when her brain was starved of oxygen after taking a cocktail of cocaine, drink and medication, an inquest heard.

Lianna Hartree, 31, had an argument with boyfriend Luke Barnes during a weekend away and took some cocaine.

They abandoned the trip early and arrived at Luke's flat at 4am in the morning to take more of the drug, the hearing was told yesterday.

In the next seven hours, the mum-of-five had a further "two and a half grammes of cocaine, three or four Valium" and cider but was found lifeless soon afterwards, Bristol Live reports.

Giving evidence at Avon Coroners Court, Lianna's stepbrother Martin Williams said: "She said she had an argument with her boyfriend, she had a Thatchers cider and I also saw her do a couple of lines of coke [at her boyfriend's house]."

Lianna’s friend Charlotte Cherry said: "I offered to pay for a taxi to bring them back to Bristol to my flat and a friend transferred £50 into Lianna’s bank account to pay for it.

"By 7am she hadn’t arrived so I messages her saying I would leave my window open and she should shout up.

"At 11am I had a Snapchat message which said she had had two and a half grammes of cocaine.

"She also told me she had taken three or four Valium."

Charlotte and Lianna went shopping and returned to Charlotte's flat in Bristol city centre.

But Lianna appeared to fall asleep on a bed.

When Martin tried to wake, the single mum was unresponsive.

"I shook her arm, saying 'wake up, wake up.'

"Then I noticed her face had turned blue and I checked her pulse. I realised she had no pulse and started to do CPR," Martin said.

Lianna, of Easton, Bristol, was put in the recovery position.

A bag of tablets, believed to be the painkiller Pregabalin, fell out of Lianna’s bra.

Martin and Charlotte took it in turns to do CPR until paramedics arrived, but Lianna was pronounced dead at 7.49pm on May 5.

PC Gemma Huddleston was called to the scene.

She said: "There was drugs paraphernalia in the room.

"There was a bag of white tablets next to the deceased.

"There was no evidence to suggest Lianna had taken her own life. There was nothing suspicious and this was a death related to drugs."

A post mortem examination revealed that Lianna had high levels of cocaine in her blood at a ‘range where fatality had been reported.’

There was also evidence of Diazepam and Valium in her system. Her bloods showed low levels of alcohol.

Lianna’s grandmother, Anne Wilkes, told the inquest: "Lianna always had a warm smile from a young age.

"She was always happy and generous to her family and friends.

"She had five children, three boys and two girls and each was precious to her.

"She was dedicated to them.

"Words are not strong enough to say how devastated we are at losing her."

The inquest also heard how Lianna was looking forward to the future and moving into a new home with her children."

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