And weeks later, she became the first Australian in 46 years to lift the French Open and only the second indigenous Australian after Evonne Goolagong Cawley.
"Pretty tough to come to terms with", Barty said of her first-set collapse.
"The pathways and the progress we've made for indigenous youth around the nation has been incredible", Barty, an Indigenous Tennis Ambassador for Tennis Australia, said. "It's incredible; I played the flawless match today". "For me, I needed time to step away, to live a normal life, because this tennis life certainly isn't normal. I mean, obviously we have dreams and goals as children, but this is incredible".
After ending Anisimova's breakthrough run, Barty now takes on another unseeded teen for the championship Saturday: 19-year-old Marketa Vondrousova of the Czech Republic.
She will also be the best-ranked Australian woman since Goolagong-Cawley became world No. 1 in 1976.
The 23-year-old easily beat Czech tennis player Marketa Vondrousova and won the game 6-1, 6-3.
She's also the sixth different women's champion the tournament has seen in the last six years.
Barty has dropped just two sets so far in the tournament, the second of which came against Amanda Anisimova in the semifinal. "So I think the time away was the best thing for her".
There were evident signs of nerves early on from Vondrousova, and Barty more than took advantage as she broke twice early on as she eased to a 4-0 lead after just 13 minutes.
"It was also windy, so it was a bit different today". This time, she was undone by Vondrousova, a left-hander who appears to possess every shot there is, with an enviable variety of speeds and angles. "She never took her eyes off me once".
The Czech teenager is now the number 38 in the world but she's sure to climb the rankings, regardless of whether she triumphs on Saturday.
Asked about being the first victor here since Court, the Aussie added: "This is a special place for Australian players. It's just been a insane two weeks". And I feel like it's just the start.
The 8th-ranked Barty will jump up to No. 2 in the rankings (highest Australian women since 7-time Slam victor Evonne Goolagong Cawley on December 6, 1976.) and earns her over $2.5 million in prize money. Barty lost in three Grand Slam doubles finals alongside Casey Dellacqua in 2013, but had only won two singles matches and lost nine at the big four tournaments when she stepped away five years ago.
"I'm nearly scared to say it but it's now 48 years ago since I won my first slam there too", Goolagong Cawley said in a statement.
"This girl kicked mine and everyone else's ass this fortnight", Petkovic tweeted, including the now-famous picture of a young Barty holding a trophy from her junior days.
"There were players that were dominant and that I looked up to". "So I'm not sure what she's going to expect now".
The build-up to the final was chaotic, with both semifinals taking place yesterday, and with the final delayed by an hour and a half due to the delay in the completion of the men's semifinal between Dominic Thiem and Novak Djokovic, and when they did get onto court it was Barty who was in complete control from the very beginning, with a tense Vondrousova failing to hold serve in the opening set.