She made her first appearance for the senior Matildas team in a 3 -- 0 friendly defeat to World champions Japan in Tokyo on 11 July 2012 .
Gielnik scored a hat - trick on her international debut for Australia Under 19s in October 2011 .
Gielnik made Gielnik 's first appearance for the senior Matildas team in a 3 -- 0 friendly defeat to World champions Japan in Tokyo on 11 July 2012 .
Gielnik scored a hat - trick on her international debut for Australia Under 19s in October 2011 .