 The murder was never solved, but there has been some speculation that Broadhurst was a victim of English Australian serial killer John Wayne Glover, who was convicted of murdering six elderly women on the Sydney North Shore district between 1989 and 1990, and is thought by police to have been responsible for other deaths.In Gillian Armstrong's "", friends and employees of Broadhurst stated that they believed the killer may have been known to her and that the motive may have been financial.This was due to the presence of two cups of tea near her body, suggesting a meeting or appointment, and the killer's apparent knowledge of her factory's layout.