Arriving in Melbourne for the Olympics, Morgan was not assured of a place in the final relay quartet. Fraser and Crapp were rested in the heats on 4 December while the remaining four swimmers qualified the team. Morgan swam the second leg in 1 minute 5.4 seconds, the fastest of the Australians, securing her position in the final four along with Leech. Australia qualified quickest for the final, winning the second heat by 3.1 seconds. They were 1.8 and 2.3 seconds faster than the South Africans and Americans, respectively, both of which swam in the first heat.