Complex sentence: She is the 2015 Four Continents champion, 2014 U.S. national silver medalist, and a representative for the United States at the 2014 Winter Olympics in Sochi.
Split into simpler sentences: She is the 2015 Four Continents champion and 2014 U.S. national silver medalist. She represented the United States at the 2014 Winter Olympics in Sochi.