The mother of a 14-year-old girl who committed suicide after being cyber bullied said she will be unable to rest until the trolls who she believed caused her daughter's death are brought to justice.

Two years after Izzy Dix killed herself, her mother Gabbi, from Brixham, Devon, has accused local police of not fully investigating the circumstances, and said they did not carry out checks on social media.

Gabbi said online bullies made Izzy's life 'hell' and robbed her of her 'intelligent, funny and beautiful' daughter.

Izzy Dix committed suicide in 2012 and has become synonymous with the dangers of cyberbullying

At the inquest of Izzy, 14, police said there was no concrete evidence trolls were to blame

Speaking to BBC Newsbeat, Gabbi said: ‘If the inquest had been presented with the correct evidence that we now have in writing, then from that inquest the coroner could have made really strong recommendations to make a change to prevent this happening to other families.

'Izzy did what she did because there was a huge issue at school and online, and I won't rest until a form of truth and justice is established.’

Izzy committed suicide in September 2013. A post-mortem confirmed the cause of death was hanging.

At Izzy's inquest in December 2013, Gabbi said her daugher's death was caused by online bullies.

Izzy became an example of the dangers of cyberbullying and at the time, Prime Minister David Cameron wrote to Gabbi promising to put pressure on website owners to solve the problem.

Gabbi said bullies had made Izzy’s life ‘hell’ because she was academically ambitious, achieved an A* in English, and refused to wear short skirts like other girls.

Mum Gabbi is continuing her fight for justice and vows to prove Izzy did receive abusive messages online

The inquest heard Izzy sent a text message to her mother on the day of her death asking if they could have a long chat when she got home from school.

Gabbi said at the inquest: ‘She said one particular person had made her life hell in a lesson and it wasn’t noticed by the supply teacher in the class.

‘I tried to reassure her that it would get better and I gave her a hug.’

The inquest in 2013 did not find any evidence that online trolls were the cause of Izzy's suicide.

Gabbi said she had seen messages her daughter received calling her a 'w****' and 'ugly'

But Gabbi still maintains that trolls were at the root of her daughter's actions.

She told Newsbeat: 'I don't just believe that she received it online, I saw them with my own eyes.

'Izzy showed me some particularly disturbing messages she'd been sent calling her ugly, freak, w****.

At the 2013 inquest the coroner confirmed it was suicide and said Izzy had attempted suicide before

'She became very guarded about her internet use.'

Gabbi also criticised police for not checking Izzy's Facebook or Ask FM profile and lodged a formal complaint.

In response she received a 16-page report which she claims shows officers did not check her daughter's social media profiles as they were unable to obtain Izzy's passwords and she said they claimed the Ask FM profile had been deleted.

Gabbi said she has been able to find the Ask FM profile herself, which although many messages have been deleted possibly by other users, the mother said there were conversations remaining that implied Izzy was being cyberbullied.

Devon and Cornwall police told Newsbeat they had fully complied with the complaints procedure process following Gabbi's complaint and subsequent appeal.

They said, 'The complaint was fully investigated, which found the police investigation into her daughter's death had been carried out thoroughly and meticulously.

'Her appeal was not upheld.'

Police combed through the teenager’s diary and discovered she had made several previous attempts to kill herself.

Police looked at Izzy's diary and said it showed emotional turmoil but not proof of trolls

Gabbi set up the Izzy Dix Memorial Group, which also helps others who are suffering from bullying online

Detective Constable Diane Brugge of Devon and Cornwall Police said at the inquest: ‘There was no suicide note left, though her diary revealed it was her third attempt to take her life.’

Torbay Coroner Ian Arrow concluded the teenager had killed herself.

He said: ‘I’m clear from the diary entries she had significant emotional turmoil.’

But Gabbi is still convinced her daughter's death was because of bullying.

She set up the Izzy Dix Memorial Group following her death and is still working to eradicate cyberbullying.

In 2014, Gabbi was trolled online by posters who targeted her following her anti-bullying campaign.

Trolls also created a fake profile for Gabbi, complete with a stolen Facebook photograph, and posted hateful comments in her name.