A family friend of Peaches Geldof has said the late star was failed by her pals as they turned a blind eye to her drug use.
Gerry Agar said that she knew that Peaches - who died of a heroin overdose in April - was in "trouble" some time ago and reached out to encourage her to seek help.
Gerry then accused Peaches' close friends of refusing to address her reliance on the narcotic.
Gerry, also a close friend of Peaches' late mother Paula Yates, said: "I knew she was in trouble years ago and I tried to confront her about it."
"So many people around her knew about it but said nothing. But I'd lost my mother and my best friend to heroin and I didn't want to lose Peaches. I wrote her a letter but I never heard from her again".
The author hoped Peaches would turn her back on drugs for good when she married Thomas Cohen in 2012. After having sons Astala, two, and Phaedra, 15 months, she had "tried" to quit the deadly habit, and Gerry was convinced she would win her battle.
However, despite apparent signs she had returned to heroin, Gerry claims Peaches' friends "turned a blind eye" and ignored her problem.
She added to Britain's Grazia magazine: "I knew she was trying to come off heroin and I thought she could make it.
"But then it started again. I knew it was happening. I think a lot of people did but turned blind eyes."
Peaches Geldof was found dead at her home in Kent on 7 April 2014 aged 25. The ambulance service described it as a "sudden death", but later it was discovered that she died of heroin overdose.