Trussell competed at four World Equestrian Games (in 2002, 2010, 2014 and 2018). Her current best World Equestrian Games result is 7th place in team dressage from the 2010 World Equestrian Games while her current best individual result is 22nd place from the 2014 edition held in Normandy, France. She also competed at the 2004 Dressage World Cup Final in Düsseldorf where she finished 15th.