Horton's first state selection for New South Wales was in 2013 in women's youth eight contesting the Bicentennial Cup at the Interstate Regatta within the Australian Rowing Championships.

[7] In SUBC colours she contested the women's single and double scull national titles at the 2017 and 2019 Australian Rowing Championships.

[9] Horton stayed in the Australian coxless pair in 2015 representing at the senior level with Molly Goodman.

The young crew took on a tightly packed field in the final at Sarasota and were fourth at the halfway mark with Poland in the lead followed by The Netherlands.

As the crews sprinted for the line, the Australian quad featuring three senior team debutantes other than Horton, dropped back and finished in sixth place.

[9] Horton and Bateman were selected to race Australia's double scull at the 2019 World Rowing Championships in Linz, Austria.

[9] Had they managed to maintain their time of 5:57:15 that they achieved in their repechage they would have beaten the winners, Canada, by nearly two seconds and won the gold medal.