Vinkhumbo represented Malawi at the 2010, 2014 and 2018 Commonwealth Games and at the 2011, 2015 and 2019 Netball World Cups. At the 2018 Commonwealth Games she helped Malawi defeat New Zealand 57–53. Vinkhumbo was also a member of the Malawi team that finished third at the 2016 Fast5 Netball World Series.