Rabe had previously served as the DA's Provincial Director in the KwaZulu-Natal before she was elected to the KwaZulu-Natal Provincial Legislature in the 2019 provincial election, having been ranked 10th on the party list. She was appointed the DA KZN Spokesperson on Social Development.[1] She supported fellow MPL Mbali Ntuli's unsuccessful bid for DA leader at the 2020 Democratic Alliance Federal Congress.[2]
At the DA's provincial congress held on 27 March 2021, Rabe was elected as one of three deputy provincial chairpersons of the party.[3] She was appointed the party's provincial spokesperson on agriculture in December 2021.[4]
Rabe unsuccessfully stood for re-election as a deputy provincial chairperson of the DA at the party's provincial conference in April 2023.[5]