Castles competed at the English Championships as a guest where she won silver in the all-around behind club teammate and Jamaica national team member Danusia Francis. She next competed at the British Championships and won gold in the all-around. Castles was once again selected to represent Sweden at the European Championships; she finished 14th in the all-around. She next competed at the European Games. During qualifications she finished 24th in the all-around and did not qualify for the final; however she qualified to the floor exercise final in third place. During event finals she matched her placement and won the bronze behind Anastasia Bachynska of the Ukraine and Aneta Holasová of the Czech Republic.