The Rabbitohs Women's Premiership side have booked their spot in the finals after downing the Wests Tigers 12-4 at TG Milner Sports Field.
The Rabbitohs got off to the perfect start when Hooker Janaya Bent burrowed over close to the line while Arabella McKenzie slotted the conversion to give a 6-0 lead.
Ill-discipline from Souths gifted the Tigers back-to-back sets on their own try line until they eventually cracked. A well-worked backline move by Wests caught Souths outwide, but the difficult conversion attempt was waved away which saw the Rabbitohs hold on to a two-point lead at the break.
Both teams got stuck into the arm wrestle upon resumption until Arabella McKenzie sliced over to pick up her maiden Rabbitohs try.
She also converted her own try which gave the Rabbitohs an eight-point lead with under two minutes remaining.
The girls from Redfern showed steel in their defence and held off any attempt at a late comeback, which left the final score at 12-4 to South Sydney.