Wednesday 28 September 2022 04:47 AM Alanah Dunstan: How sliding doors moment led Perth teen to save Gustavo Berna's ... trends now A hero teenager saved a dad's life by performing CPR when he suddenly keeled over on a commuter train - and she was only on board out of pure luck. Alanah Dunstan, 18, had forgotten it was a public holiday in Perth, Western Australia last Thursday for the death of the Queen and mistakenly travelled into work. As she returned home on the train, she noticed fellow passenger Gustavo Berna, 45, had started breathing heavily. Mr Berna - who was suffering a heart attack - collapsed as Ms Dunstan rushed to intervene. Ms Dunstan told Daily Mail Australia she had a strong feeling the man had a family, which pushed her to do her best to save him. 'I thought about how I needed to get this man back to his family, I could tell he was a family man,' Ms Dunstan said. Alanah Dunstan, 18, (pictured) said she somehow knew the stranger was a family man: 'I had this strong feeling, I could just imagine it' The disability worker, trained in senior first aid, called for someone to ring triple-0 and to alert the train driver after Mr Berna collapsed Ms Dunstan (pictured) said she and another girl on the train rushed to help the father of one after he fell over half-way through her journey home 'I had this strong feeling, I could just imagine it.' Ms Dunstan said she and another girl on the train rushed to help the father of one after he fell over half-way through her journey home. The disability worker, trained in senior first aid, called for someone to ring triple-0 and to alert the train driver. Once they realised the stranger had no pulse, she started CPR. Ms Dunstan said she understood the gravity of what she was doing as she fought to save his life. 'I was crying, I couldn't control my tears, I was so worried that I was going to mess up and that he wouldn't get to see his mum, dad or partner again,' she said. 'I knew how many people his death would hurt. I wanted him to be more than a statistic.' After the driver came out and saw her giving CPR, the train changed direction back to Perth at 'breakneck speed'. An ambulance met them at the train station and took Mr Berna to an intensive care unit at a hospital. The commuter's sister-in-law Nicola Berna said: It really is a testament to the CPR Alanah (pictured) did ... it's really nothing short of a miracle' Doctors told the man's sister-in-law, Nicola Berna, that he may not wake up after the horror experience. But by Saturday he had regained consciousness and was moved to a cardiac ward. 'It really is a testament to the CPR Alanah did ... it's really nothing short of a miracle,' she told WA Today. Ms Dunstan had only been on the train because of her public holiday error. Meanwhile, Ms Berna searched for the disability worker who saved her brother-in-law via an online community page to thank her. 'Thank you isn't enough for what you've done and our family's so grateful,' Ms Berna said. Gustavo Berna's sister-in-law, Nicola Berna, searched for the disability worker who saved Mr Berna (pictured, left) via an online community page (pictured) to thank Ms Dunstan (pictured, right) 'He wouldn't be here without her ... she did the CPR correctly, it's just amazing,' Ms Berna told the Daily Mail Australia. She said the Colombian national is communicating in Spanish, while his memory is slowly returning to him. 'It's not 100 per cent, he doesn't remember what happened on the day but he is remembering things,' Ms Berna said. The family are waiting for him to be well enough to have bypass surgery done. About 225 people suffer cardiac arrest in public spaces each year in Western Australia, according to St John WA - with most not surviving. The teenager said she may get to see Mr Berna after he recovers from his surgery in a couple of weeks and played down her rescue efforts. 'I feel a bit guilty honestly, because everyone is calling me a hero and an angel, but I feel like anyone with the knowledge I had would of done the same,' she told Daily Mail Australia. 'I'm very grateful though, his family is so gorgeous, and I feel so grateful I could help get him back safe to his family.' All rights reserved for this news site (dailymail) and under his responsibility