[3][5][6][7][8] At the 2020 US Olympic Trials, held in Omaha, Nebraska in 2021 due to the COVID-19 pandemic, she was one of the youngest swimmers to compete at 14 years of age, Kayla Han was the youngest, and as one of the Wave I participants she tied for fourth-place in the b-final of the 100 meter backstroke and placed second in the b-final of the 200 meter backstroke with a 2:14.37.

[5] Gaining more competition experience leading up to the Championships, she competed at the senior 2022 US National Championships three months later, placing second in the c-final of the 400 meter individual medley with a 4:49.06 and won the d-final of the 200 meter freestyle with a 2:00.92.

[15] Day one of the 2022 Junior Pan Pacific Swimming Championships, held at the Veterans Memorial Aquatic Center in Honolulu in August, she placed second in the b-final of in the 100 meter backstroke with a time of 1:01.61.

[18] In the final, she placed fourth with a time of 2:14.45, finishing just 0.09 seconds behind fellow American and bronze medalist Gracie Weyant.

[17] As a 16-year-old at the West edition of the 2022 Winter Junior US National Championships, held in December in Austin, Texas, O'Dell started off her individual events with a second-place finish in the 200 yard individual medley with a time of 1:55.61 and an eighth-place finish in the 50 yard freestyle with a time of 22.78 seconds on day two.