The Australian is scheduled to next face Jamie Hampton in the quarter-finals.
The American defeated wild-card entry Tamarine Tanasugarn of Thailand 7-5, 7-5.
Also, Japanese qualifier Misaki Doi beat Olga Puchkova of Russia 6-3, 6-2 and is scheduled to next take on Chanelle Scheepers of South Africa.
Additional reporting by Staff reporter
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