Since then, Angie has risen to new heights, competing all around the world and proving she has what it takes to make the big league.
Now, the young star is preparing for her biggest challenge - securing a spot at the Tokyo 2020 Olympics.
"I was climbing things around the house, and I'd put smudge marks in the doorways and fell out of a tree - so my mum said she needed to get me somewhere safe to climb," Scarth-Johnson said. "Then I joined a climbing gym, and that's how it all started."
Angie has travelled the world for outdoor climbing, going to sites in Spain, Italy, France, Tonga, Puerto Rico, and America.
"I love Spain. Europe has some of the best climbing in the world," Scarth-Johnson said.
Sport climbing will be making its debut at Tokyo 2020 and will be divided into three separate disciplines: speed climbing, lead climbing and bouldering.
Only 20 athletes per gender will be allowed to compete at the Games, and only two athletes per gender per country will compete in any given event - so it's a very competitive field.
"It's all indoors, and because of my age I do have a slight disadvantage because I haven't been able to get the experience in indoor climbing," Scarth-Johnson said. "So for me, it's really important to focus on my training now."
This article originally appeared on The Morning Show.