Complex sentence: In 2009--10, she struggled with an Achilles tendon inflammation and had a disappointing season, finishing 15th at the Olympics and failing to qualify for the free skate at the 2010 Worlds after a bad fall in the short program.
Split into simpler sentences: In 2009--10, she struggled with an Achilles tendon inflammation. She finished 15th at the Olympics and failing to qualify for the free skate at the 2010 Worlds after a bad fall in the short program.