Osborn continued skating at Richmond during and after the war. She became the British national champion in 1952 and was selected for the 1952 Winter Olympics, where she finished 11th. In 1953, Osborn won her second national title and went on to win gold at the European Championships in Dortmund. After her victory in Germany, she was awarded the Harry E. Radix skating pin. Osborn remains the last British skater to win the European title in ladies' singles. Later in 1953, she won the bronze medal at the World Championships in Davos, Switzerland.