Raised in the Ruhr District (Ruhrgebiet) in Germany, Leonie relocated to Los Angeles as a teenager. She studied classical guitar at Los Angeles City College, and received a Bachelor Degree in Composition along with a Minor in Dance Performance at California State University Northridge in 2010.
She then moved to the Netherlands and earned her Master Degree in Composition at the Royal Conservatory of The Hague in 2013, where she studied with Peter Adriaansz and Calliope Tsoupaki. She then completed a one-year course at the Institute of Sonology, where she focused on Field Recording and the Spatialization of Sound. In 2016 she finished the fourth and last year of the Contemporary Music Through Non-Western Techniques Program at the Conservatory of Amsterdam with Rafael Reina as her principle teacher.
In 2017 she was composer in residence for Forum Wallis Contemporary Music Festival in Switzerland, as well as at New Media Society in Tehran, and for The Story of Space Festival in Panjim, Goa. Her works have been performed in The Netherlands, Germany, Iran, Japan, the United States, Spain, and India, and broadcast on radio stations in various countries.