I need you, dad, texted mephedrone teen - but by the time he received it she was dead

The hearing heard how Alissia McCoid, 18, could have been depressed after taking the controversial drug mephedrone, a formerly legal drug which was banned by the Government in April.

She had taken a dangerous cocktail of drugs and drink including mephedrone, Diazepam, vodka and wine and had returned to her home in the early hours.

Hull Coroner's Court heard on Monday that Alissia was found hanging at her home at about 11.30am on February 7, by her stepfather Andrew Hunt.

Just six hours earlier, at 5.35am, she sent her biological father, Simon Deyes, a text message. It was jumbled, but read: "Ring me now ASAP, I need you now."

However, Mr Deyes' phone was on silent and he did not notice the message until the next morning, after he had been told Alissia was dead.

The court heard she had taken the mephedrone for the first time on New Year's Eve and continued to use it regularly with friends over the next five weeks.

Her mother Denise said she had noticed a change in Alissia's mood and that she had "rings around her eyes".

Speaking at the inquest into her daughter's death, she said: "She had more nights partying and was looking run down. I noticed she looked withdrawn.

"She was snappy and she started getting spots all over her face and had dry lips."

Just days before her death, her mother overheard Alissia whispering to her sister Carmen and confronted them.

She said: "They said they had been taking MCat, but I didn't know what that meant.

"They explained it was only plant food and they said it was legal ' as if it was normal."

Mrs McCoid broke down in tears as she said: "But teenagers, you can't say anything to them, you can't advise them, they always know better."

Dr Anne Campbell, who performed a post-mortem examination on Alissia, said the mephedrone would have had an effect on her mental state.

She said: "Mephedrone is a stimulant rather like an amphetamine.

"When you first take it, it would make you feel elated but, as is common with other drugs, when the effects wear off you can feel low."

Alissia visited the Welly Club in Hull, East Yorks., on the Saturday night with Carmen. There, she met her ex-boyfriend Daniel Senft, who told her he could not see her as he had reunited with his former girlfriend.

She apparently took the news well and they went on to the same house party together.

Later that night she was seen crying by friends and, at some point, made the five-minute walk home alone.

In a letter read out to the court, her heartbroken mother described her as "a lovely, vivacious girl at the threshold of life".

Coroner David Rosenberg concluded the mephedrone would have affected her judgement.

He said: "We have heard the evidence that it was a powerful stimulant which made you feel very happy, but when the effect wore off, made you feel very low.

"On Saturday, February 7, she went to Welly Club and we heard she used MCat that night."

Mr Rosenberg recorded an open verdict, because he said Alissia may not have intended to kill herself.

He said: "It was clear her mental state had been impacted upon by her use of mephedrone and drink.

"No one knows exactly what state she was in that morning."