Emma Jones was teaching eight-year-olds in Khalifa city
A teacher from south Wales working in the Middle East died in her apartment after drinking cleaning fluid, an inquest has been told.
An open verdict was recorded on Emma Jones, 24, from Caerphilly, who worked at an Abu Dhabi international school.
Her mother Louise Rowlands said her daughter was worried she could be jailed after claiming an ex-boyfriend put naked pictures of her on Facebook.
Her former boyfriend denied downloading pictures of Ms Jones from her computer.
At the hearing, Mrs Rowlands, 41, said her daughter was distressed after claiming her former partner Jamie Brayley posted pictures of her online.
Mrs Rowlands, 41, said: "He put a memory stick in the computer and copied some indecent images of Emma.
"He put them on her Facebook and she said she was accused of prostitution by a man working at the school."
Mr Brayley described Mrs Rowlands's claims as "complete fantasy".
He said he had used Ms Jones' computer but denied he had ever downloaded private photographs of her.
He said: "Emma never sent me any indecent images. She wasn't that type of character."
The inquest heard that Ms Jones had taught eight-year-old children at the International School of Choueifat in Khalifa, Abu Dhabi, since 2008 until her death last November.
Ms Jones graduated from Greenwich University in sociology
A man called George working in the IT department at the school saw the pictures, and Ms Jones feared he would report it to the authorities, the coroner was told.
Mrs Rowlands added: "Emma and George didn't get on at all. She said she had to get away.
"She was crying, she was breaking her heart. I said, 'Emma, whatever it is can't be that bad. Just come home'."
However Ms Jones said she would be thrown in jail if she tried to leave the country.
Ms Jones confided in her flatmate Mona Moshki, an Iranian teacher, the person who found Ms Jones collapsed in their apartment.
Her passport was in her pocket and clothes were lying on the bed ready to be packed, the inquest heard.
She called an ambulance and attempted to revive her but Ms Jones died before paramedics arrived.
Abu Dhabi police ruled out foul play, and a post-mortem examination carried out at Llandough Hospital near Cardiff confirmed Ms Jones died after drinking a corrosive substance.
'She was a real go-getter'
Deputy assistant coroner Thomas Atherton said he did not believe Mr Brayley could be blamed for Ms Jones' death.
He said Ms Jones may have accidentally drunk cleaning fluid from an unlabelled container believing it to be water, and could not be certain she had intended to kill herself.
"For whatever reason Emma expressed concern she was about to be arrested and put in prison," he said.
"She agreed the best course of action was to leave Abu Dhabi and return to Britain.
"Her clothes were out and her passport was in her pocket. That's not someone who is contemplating suicide."
After the hearing, Mrs Rowlands welcomed the verdict.
She said: "She was one of the most sane people I know, very vibrant and bubbly, so I'm as happy as I can be with the verdict.
"There was no way my daughter committed suicide. She was a real go-getter, full of life.
"In the summing up the coroner said it could be Emma had drunk from the wrong bottle. There were three different bottles found.
"One was a water bottle and he did not know if it was a sports bottle or a bottle you would get Evian in."