Olivia qualified for the Ladies European Tour in Category 7 after winning the 2015 LET Access Series Order of Merit. In 2015, she won three times on LETAS: the ASGI Ladies Open in Switzerland and the Boras Ladies Open in Sweden, while still an amateur. Then, after turning professional in July, she collected her third at the Norrporten Ladies Open in Sweden in August. Her other successes on LETAS included 2nd at the CITIZENGUARD Trophy in Belgium and CREDITCATE24 Trophy in Germany. She also received invitations to play in the Helsingborg Open and Omega Dubai Ladies Masters on the Ladies European Tour in 2015.
As an amateur, she won the 2015 Spanish and Portuguese International Ladies Championships, the 2013 German Ladies National Championship, the 2011 Luxembourg Ladies International Championship and the 2010 U/14 German Girls’ National Championship. She finished 4th at the 2014 Youth Olympic Games in China and was a member of the winning European Vagliano Team in 2015. She turned professional with a handicap of +4, ranked seventh in the world.