[1] Lettenberger represented the United States at the 2020 Summer Paralympics in the 200 metre individual medley event and won a silver medal.

[2] On April 14, 2022, Lettenberger was named to the roster to represent the United States at the 2022 World Para Swimming Championships.

[3] On April 29, 2023, Lettenberger was named to the roster to represent the United States at the 2023 World Para Swimming Championships.

[4] Ahalya was born with arthrogryposis, which causes muscle weakness and joint restriction in the lower limbs.

She graduated from Rice University in 2023 with her Bachelor of Science in Bioengineering, where she conducted undergraduate research with Dr. Marcia O'Malley at the Mechatronics and Haptics Interfaces (MAHI) Lab.