In 1963 Grossen spent six months as a French instructor in a professional school in the Democratic Republic of Congo and lived in Gabon for two years, an experience that would influence her later career.

[5] As her own work and commissions began to take off, Grossen left Larsen Inc. to establish her own studio practice, and to teach workshops at venues around the world.

The artist is best known for her large architectural sculptures made from materials including manila rope and sisal, most of which hang freely from the ceiling.

[3] Shortly after arriving in the United States, Grossen was included in the seminal 1969 Wall Hangings exhibition at the Museum of Modern Art in New York City, where her large-scale fiber sculptures stood alongside works by contemporaries like Sheila Hicks, Claire Zeisler, Lenore Tawney and Eva Hesse.

Over the course of her career, Grossen has created numerous large scale works for public places, institutions, corporate offices and hotels in New York, Chicago, Washington DC, Boston, Texas, California, and abroad.