It's hard to predict women's games correctly as their performance is really erratic, we have seen with few matches where a good team was defeated by a mediocre one in comparision; examples being, WI winning against England and SA against Australia.
But, if I had to go with any, I'll go with SA to win the final, just because they convincingly beat Australia, it wasn't a fluke win and Australia is team that's high on stats in every department.