Fields said last year's tour of India, during which the Aussies emerged triumphant 8-1, gave her team good experience of the sub-continental conditions which came in handy during the World Cup campaign.
The panel struggled with deciding the final 12 for the women's team and players who were considered included Arran Brindle and Sarah Taylor of England, Amy Satterthwaite and Sian Ruck
Australia have beaten West Indies by 114 runs to lift their sixth Womens' World Cup title.
Both Australia, who have already booked their berth ahead of their final league match, and the West Indies secured eight points from four wins in the Super Six stage.
Pakistan captain Sana Mir praised the bowlers terming their performance as the "best ever" against Australia. "We bowled and fielded exceptionally well today to restrict Australia to 175 and, I think we should have chased the score," Mir said.