The Dollar du Murier-daughter is in ownership of Porter but was recently competed by Peter Olthof.
Together with Olthof the Holsteiner mare jumped to the sixth place in the 1.45m CSI2* Grand Prix at the Peelbergen Equestrian Center. The pair also placed fifth during the threestar competition 1.50m class in Drachten.
Under the saddle of Porter, Doma Sue competed mainly on US-soil.