Cleaver took up athletics while at primary school in Barraba, New South Wales. In 2010, she took up athletics with a disability and was classified as a T38 athlete. At the 2015 IPC Athletics World Championships in Doha, Cleaver competed in three events. She finished fifth in women's 100 metres T38, 4th in the women's long jump T38, and competed in the women's 4 x 100 metre relay (T35-38) where her team was disqualified for a baton change outside the takeover zone.