A man was questioned by police over the death, but her father has now dismissed the idea that his daughter Louella could have been murdered.
"We’ve lost our angel. It’s not murder – they were friends. It was just a tragic mistake, a tragic accident," he told the Sun newspaper. "She touched so many lives. She was so very positive, so bright. She had such energy. The tributes to her have been incredible."
According to reports in the UK papers, a friend of Louella was picked up by local police and questioned. It is understood that the man in question had contacted Louella's family after she went missing at the festival.
One source told The Sun newspaper that the her death is believed to be linked to a drug that was "too powerful".
A family source told MailOnline today: "No one can quite believe that Louella has gone. John and the family are struggling and are in tears. John said his world has been shattered. The whole family feel that way.
"It is just unreal. Louella's brother and sister are in absolute pieces but they all think it is an accidental death.
"They don't for one minute believe that it was murder. The police have to do their job but the family fully expect him to be released. This was an accidental death and there was no murder."