Complex sentence: On February 19,2017, Dunklee finished 2nd in the Mass Start at Hochfilzen in 2017, winning her first medal in a World Championships and becoming the first women and second person overall after compatriot Lowell Bailey to qualify for the USA Winter Olympic team for 2018.
Split into simpler sentences: On February 19,2017, Dunklee finished 2nd in the Mass Start at Hochfilzen in 2017, winning her first medal in a World Championships. It also made her the first woman and second person overall after compatriot Lowell Bailey to qualify for the USA Winter Olympic team for 2018.