Debbie Duncan (pictured with Jay Slater), 57, is now calling for a law change to tackle the spread of misinformation and online abuse during the investigation into a missing persons case.
The devastating last words were uncovered by the 19-year-old's mother when she logged onto her son's Snapchat account following his death on July 15 last year.
Jay, from Oswaldtwistle in Lancashire, was found dead in a ravine on July 15 last year after a gruelling 29-day search which sick conspiracy theorists and armchair detectives threatened to derail.
Stephen Roccas was staying at the remote mountain cottage in Masca with Jay and convicted drug dealer Ayub Qassim, 31, on the night Mr Slater disappeared.
JAMES TOZER: I witnessed the results of the painstaking care which British and Spanish police plus the coroner's team put into examining every scrap of evidence about his final hours.
LIVE UPDATES: Follow the latest news from Preston Coroner's Court where a coroner will deliver a verdict on how Jay Slater died in Tenerife following his disappearance last year.
LIVE UPDATES: Follow the latest from Preston Coroner's Court as the inquest resumes into Jay Slater, the British teenager, who died while holidaying in Tenerife last summer.
The Disappearance Of Jay Slater will follow the story of the 19-year-old who vanished in Tenerife last June - only to be found dead a month later at the bottom of a ravine on the Spanish party island.
This week the long-awaited inquest into the apprentice bricklayer's death was dramatically halted after his mother Debbie Duncan said she needed answers from key witnesses.