A right-handed player from Adelaide, Hewitt was highly ranked in junior tennis and represented Australia at the 2000 Commonwealth Youth Games in Edinburgh.

[2] In 2001 she featured in the main draws of two WTA Tour tournaments, the Croatian Bol Ladies Open and Belgium's Sanex Trophy, which was followed by home appearances at the 2002 Sydney International and 2005 Gold Coast Hardcourt.

Her biggest title win came at Canberra in 2004, where she beat top seed Evie Dominikovic in the final of the $25k tournament.

[3] As a doubles player, she competed as a wildcard in the main draw of the Australian Open every year from 2002 to 2005.

During her career, she was in a relationship with Swedish tennis player Joachim Johansson, which lasted for five years.