Khiarna played in the NNL in 2017 as a 14-year-old out of Trident High School in Whakatane, the same year she made the NZ Secondary Schools team. By 2020, Williams had stepped into the elite level with the Magic.

Khiarna was a training partner with the Waikato-BOP Magic team and a member of the Waikato-BOP BEKO league team. In 2019 she played in the NZ Secondary Schools netball team in a series against England.

Williams was originally selected as a Pulse training partner in 2023 but subsequent surgery on a lingering shoulder injury and a lengthy rehabilitation meant she missed the entire season but in 2025 came back for a second season with the Pulse.