The parents of missing cruise ship worker Rebecca Coriam have again criticised the investigation into their daughter's disappearance after two Disney staff members claimed they had previously coaxed her down from the vessel’s handrails.

A male and female employee, from the Disney Wonder boat, alleged the 24-year-old had tried to take her own life in the days leading up to her disappearance in March 2011.

But the Chester student’s parents - and other friends from the ship - say there is no evidence Rebecca was feeling suicidal as the boat sailed into Mexican waters, near Puerto Vallarta, reports the Liverpool ECHO.

A Facebook message from Rebecca to her mum, Ann, just before her disappearance, was noticeably upbeat, reading, “Hey mum, hope you’re ok. I will call you tomorrow... miss you.x”

Rebecca Coriam

And tickets obtained by the Hope University student - for her and her parents to visit Disneyland Paris - were found on a table in her cabin.

Written on that paperwork was the message, scribbled down, which said: “Ring mum, Friday morning, English time!!!”

Other Disney employees told police that Rebecca was up in the ship’s staff bar area until 2am on the day she went missing, and described her as “having a couple of beers and coming across as “happy-go-lucky.”

An American woman and a man, from Central America, gave statements to the Bahamian Police Superintendent Paul Rolle, who probed Rebecca’s vanishing.

Rebecca was in a relationship with the American, a fact known by her parents Mike and Ann, who live in Guilden Sutton.

The family is also aware of a potential love triangle between Rebecca, the female American and an older man, from Central America, which led to disagreements and fall-outs.

But the Coriams, who flew to Los Angeles, where the ship had docked, days after the tragedy, felt “witnesses had been coached,” describing the investigation as a “sham” in documents seen by the ECHO.

Previously-unseen papers demonstrate how unhappy the Coriam family were with the investigation into their daughter’s death.

Writing to Liverpool-based maritime expert Bill Anderson, who has also taken on the role as private investigator for the Coriams, the parents said: “The Bahamas authorities carried out a short investigation, but little results were brought forward.

“We never received any final report and little evidence or related material to the investigation was disclosed to us.

“Cheshire Police were informed and did liaise with the Bahamas authorities, but Cheshire Police did not proceed with their own investigation, on the grounds of lack of proper jurisdiction in this matter.

“Cheshire Police also received an interim report which, in their words to us, was ‘totally and utterly unsatisfactory’ and they were under instructions not to disclose to the family its contents.

“We have tried under the Freedom of Information Act with no success to see the report.”

Mr Anderson has called for a new enquiry into Rebecca’s death and recently met the government’s Policing Minister, Brandon Lewis, outlining the probe’s alleged failings in a seven-page document.

The Coriams accepted an undisclosed sum of money from Disney as part of a settlement.

In recent years, the ECHO has exposed a catalogue of flaws in the Bahamian Police investigation including how the flip flops handed to Rebecca’s heartbroken parents, when returning her possessions, did not belong to her.

The footwear, said to be left on the edge of the ship where Disney said she fell overboard, had a different signature and cabin number written on their side.

And the student’s favourite shorts were ripped when they were handed back to her parents, which her parents think could be evidence of a violent struggle just before her death.

Politicians and Rebecca’s relatives believe the 24-year-old was raped or sexually assaulted just before she went missing.

Disney were approached for comment.