[8] She was coached mainly by her paternal aunt, Kirsten Miller-Zisholz,[4] in Lansing, Michigan, until June 2015.

In 2012–13, Miller won a pair of silver medals at JGP events in Austria and Croatia and qualified for the 2012–13 Junior Grand Prix Final in Sochi, Russia.

[11] In September 2014, making her senior international debut, Miller took the silver medal at the Lombardia Trophy, an ISU Challenger Series (CS) event in Sesto San Giovanni, Italy.

In June 2015, Miller relocated to Artesia, California, to train under Rafael Arutyunyan.

[5][9] Miller-Zisholz, who encouraged her to move to a more competitive training environment, continues to work with Miller as an adviser and technical consultant.