When she drives off-route, Joe realizes that she has stolen his five wives, and leads his army in pursuit of Furiosa, with the aid of nearby Gas Town and the Bullet Farm.
She has stolen his five wives. This was with the aid of nearby Gas Town. This was with the aid of the Bullet Farm. She leads his army in pursuit of Furiosa. This is with the aid of nearby Gas Town. This is with the aid of the Bullet Farm. Joe realizes this. She drives off-route.