Between 2007 and 2011, Nourse made 25 senior appearances for Australia. She previously represented Australia at under-21 level. She made her senior debut for Australia on 21 July 2007 against New Zealand. Nourse was called into the senior team as an injury replacement for Mo'onia Gerrard after impressing national selectors during an unofficial practice match against England. She became the first Queensland Firebirds player since Vicki Wilson to represent Australia. Coincidentally, in 2007 Wilson was Nourse's head coach at Firebirds. Nourse was subsequently a member of the Australia teams that won the gold medal at the 2007 World Netball Championships and the silver medal at the 2010 Commonwealth Games.[3][12][15][20] She was expected to represent Australia at the 2011 World Netball Championships, however she was ruled out after suffering an ACL injury while playing for Firebirds.[18]