A cancelled date at the movies has been blamed for leading to the suicide of a teenage model in the UK.

Gabrielle Joseph, 16, wrote a three-page message on Facebook before her death in April, when she was hit by a train near her home in South Wales.

An inquest into Gabrielle's death was told that she was distressed after receiving a message cancelling a date at the cinema for the following evening, Britain's Daily Mail has reported.

She died 75 minutes later from multiple injuries sustained from the train accident.

Coroner Philip Rogers said the last part of Gabrielle's Facebook message clearly indicated that she was "going to take her own life".

"Gabrielle was described as 'bubbly' and 'outgoing' with a busy life attending college along with two part-time jobs - including with one fashion retailer Hollister at its store in Cardiff," The Mail reported.

"Gabrielle dreamed of being a top fashion model - and on her own modelling website, she wrote: 'In order to be irreplaceable, one must always be different.'

"But her father Terry described her as being 'groggy and pale' on the day of her death."

The Joseph family said they were trying to move forward by "attempting to increase awareness and understanding of the issues surrounding youth suicide and the impact it has on those left behind".

"We would like to take this opportunity to urge young people to share their problems by talking to someone they trust," the family said.