Molineux's team were utterly dominant, keeping things tight in the field, before chasing down a modest target of 151 with 17 balls to spare.Beth Mooney led Australia's chase with 64 -- her fourth fifty in a major global final.Doubts were expressed when injury-prone all-rounder Molineux, 28, was appointed Australia captain in January after all-time great Alyssa Healy announced her retirement.A back issue meant Molineux neither bowled her spin nor batted as captain in the first two matches of a multi-format tour of the West Indies, and eventually missed the last two to rest."Captaining a couple of games and getting injured, shock," Molineux told a post-match press conference. "I suppose there was a few doubts internally and a few doubts externally. "But I think what maybe I've learnt over my journey so far is that you just have to keep believing. And I'm incredibly lucky that people believed in me."Molineux added: "I think when I did miss those games at the start of the (Australian) summer after just being announced captain, it probably made me feel like it might not work out."But I just think I'm so incredibly lucky with the support I've had, not just over the last six months, but it's been 10 years in this team for Australia."Molineux had spoken before the final of her childhood dream to watch a Test at Lord's, with her father. Her parents, however, got to see Molineux lead Australia to victory in a World Cup final in front of a capacity crowd of nearly 29,000 at the 'Home of Cricket' instead. "I gave him (her father) a big hug before (the match). He's incredibly proud. It was pretty emotional as well. It's just nice to have that moment with him and mum and my sister, Chloe."Mooney's 'nerves of steel'