[8] Meder placed ninth in the 400 metre individual medley at the 2022 Commonwealth Games, held in Birmingham, England, with a time of 4:51.65.

[11] For the preliminaries of the 50 metre butterfly on day three, she tied Quah Ting Wen of Singapore for eleventh-rank with a time of 27.16 seconds and qualified for the semifinals.

[16][17][18] She placed fourth in the final, finishing less than a second and a half behind bronze medalist Abbie Wood of England with a South African record time of 2:12.01.

[19][20] The following day, she started with a time of 29.55 seconds in the 50 metre backstroke preliminaries, qualifying for the semifinals ranking thirteenth.

[33] On The second day of competition, she split a 1:57.67 for the anchor leg of the 4×200 metre freestyle relay to help place tenth in a time of 8:04.85.

[34] On the morning of day three, she set a new African record in the 100 metre individual medley with a personal best time of 59.38 seconds and advanced to the semifinals ranked eighth.

[36] In the evening semifinals of the 100 metre individual medley, she lowered her African record mark to 58.98 seconds and qualified for the final ranking fifth.

[39] In the evening, she brought the African record in the 100 metre individual medley down to 58.46 in the final of the event, finishing less than one second behind gold medalist Marrit Steenbergen of the Netherlands to place sixth.