Dr Sherley began her career as a scientist. She completed a BSc and PhD at the Australian National University working in the areas of microbiology and molecular genetics. After a brief period lecturing at the University of Tasmania she returned to the Australian National University to take up medicine.

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After completing her medical degree, Dr Sherley made an early choice to take up a career in Sexual Health Medicine. She completed training with the Royal Australasian College of General Practice and  the Royal Australasian College of Physicians - Australasian Chapter of Sexual Health Medicine.

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Dr Sherley has lived in Bungendore since 2002, and has provided GP services to her local community since 2013. In 2018 Dr Sherley started a private practice in Sexual Health Medicine based at Bungendore Medical Centre, offering people from the Canberra and Goulburn regions the option of quality private sexual health care in a discrete setting.