Zaragoza made a bright start to the contest although they did not find a breakthrough until the 30th minute when the Zambia international netted from the right-wing, with a superb long-range effort.
Despite the dominance, the visitors could not add another until Nachula intercepted the ball in the hosts area before firing past goalkeeper Martina Anselmo two minutes after the restart.
Nacho Bracero s side extended their lead when Cara Curtin netted from a goalmouth scramble for the third in the 64th minute.
To compound the hosts woes, Curtin was brought down inside the area to gift the visitors a penalty and Teresa Dominguez converted from the spot to wrap the victory four minutes from time.
Zambia
Spain
Zaragoza
Baja-california
Mexico
Spanish
Zambian
Rachel-nachula
Pozuelo-alarcon
Reto-iberdrola
Martina-anselmo
Cara-curtin