Gaffney was raised in Melbourne and educated at the
Ruyton Girls' School where she took up rowing. Her senior club rowing has been from the
Melbourne University Boat Club. Gaffney first made Victorian state selection in the 2021 Victorian's women's senior eight which contested and won the Queen's Cup at the Interstate Regatta. In 2022 she again raced in the Victorian Queen's Cup eight to victory. In MUBC colours she has won a national title at the
Australian Rowing Championships in 2021 - gold in the women's coxless four. She also won medals at the 2022 Australian Championships - silver in women's pair and bronze in the women's coxless four. ==International representative rowing==