At some point, she wrote a paper based on three years of research on how to stop amyloid beta and tau proteins being toxic to brain cells. She later discovered a molecule that could prevent misfolded protein aggregate toxicity and thus prevent diseases such as dementia, Parkinson's disease and Huntington's disease.
On 17 September 2016, after Gaynor got lost while jogging with her son Ben on the Calgrath mountainside, she fell into an underground cave and sustained a compound tibia-fibula fracture. Doctors Ethan Hardy and Alicia Munroe managed to reduce her fracture, and Gaynor was rescued. At Holby City Hospital's emergency department, Gaynor's condition deteriorated, and consultant Elle Gardner found a packet of the stimulant ephedrine in her coat. Realising that she needed to spend more time with her family, Gaynor decided to turn down the grant money she had been awarded and stood down as the project's head. (CAS: "Pride Comes Before a Fall")