Halimatu Ayinde, Michelle Alozie, Toni Payne, and Rinsola Babajide joined the Nigeria camp, Tuesday evening, bringing the head count to 18.
The players arrived Abuja just before the Falcons dinner time.
Goalkeeper Chiamaka Nnadozie, experienced centre-back Osinachi Ohale, and Juventus star Jennifer Echegini arrived earlier today.
Furthermore, the camp expects four more players to join in preparation for the crucial encounter.
The team continues their training sessions ahead of the first-leg clash against South Africa at the Moshood Abiola Stadium this Friday.