Sue was brought up in the town of Newmarket, England, the horse racing capital of the world.
After riding in small events and show-jumping as a child, she progressed into racehorses at the age of 16. She started riding out for Harry Thompson-Jones when he had his good steeplechasers including Tingle Creek and Sweet Joe.
Most of her career has been spent in flat racing, where she had a few amateur rides. Before she came to the States in 1992 she worked for the great Major W. R. Hern during the years with Nashwan, Unfuwain, Prince of Dance, Dayjur, Roseate Tern and Drumtaps. She also looked after a horse for the Queen.
Upon her arrival in the United States, she worked for Jonathan Sheppard for a few years before traveling the country, working in Kentucky and Montana and then ending up back in Maryland in 1997. Sue started working for Graham in September 2002. She and her husband Niall make their home in Fair Hill.