When Roxy and Lexy Jorgensen-Neave's dad stopped being able to breathe, they were the only people home.
The 12-year-olds have been named Junior Triple Zero Heroes for the bravery they showed calling emergency services, along with 26 other young Victorians.
The twins had only been home for five minutes when their dad Graeme Neave called from his caravan out the back. Their foster mum Kate Koopmans had left five minutes earlier, their foster dad Ray Koopmans got home five minutes later.
But in that window Mr Neave called Roxy to come, saying he couldn't breathe properly and needed help.
Roxy spoke to Triple Zero and monitored their father, while Lexy ran to open the gate for an ambulance.
Roxy and Lexy were then 11-years-old.
Mr Koopmans was so close he arrived before the paramedics. He remembers Mr Neave's condition started to improve at that point.
"He got better when I got there, once he knew there was an adult there, it wasn't just up to him to take care of the girls," Mr Koopmans said.
"Imagine him being there, the girls are just there, he would have felt 'Oh, I better make myself well for these kids', but the pressure was off. He would have felt safe because his girls were safe, that there was an adult there with them."
The girls' father who has asbestosis is now in care in Heathcote. He came back to the caravan, but had continued attacks, and the family did not think it fair for Roxy and Lexy to have that responsibility again.
"That's what I couldn't believe, the one time I've left them to happen. But in saying that it's going to make them who they are, they're going to be great girls," Ms Koopmans said.
Roxy and Lexy's story was so inspiring that the principal of their primary school in Heathcote began first aid lessons for students.
For other kids in their situation, they would urge them to call Triple Zero.
"Just go for it straightaway, don't look back, just continue doing it. You'll help save other people," Roxy said.