She presented coverage as well as reported on coverage of each of the Winter Olympic Games, the Summer Olympic Games from the 2000 edition, and the Paralympic Games of 2004, 2008 and 2012. From 2005, Thiel presented broadcasts of "ZDF-Sport-extra" in which she covered Alpine winter sport competitions, which became one of her specialities. She presented coverage of the FIS Alpine Ski World Cup, the 2006 FIFA World Cup which was held in Germany, the FEI World Equestrian Games, and golf. The final year of Thiel's life (2016) saw her present coverage of the Alpine World Cup for the "ZDF-Sport-extra" programme as well as the sports bulletin on "heute" that May. She was working on writing a book prior to her death.