Complex sentence: She failed to qualify for the 2008 Games however by teaming up with the 2008 Olympic Silver Medalist Lobke Berkhout the team have dominated the 470 Class.
Split into simpler sentences: She failed to qualify for the 2008 Games. However, by teaming up with the 2008 Olympic Silver Medalist Lobke Berkhout the team have dominated the 470 Class.