Katherine was born in the United States – her mother emigrated there from the Czech Republic to flee the communist regime. After 1989, Katherine moved to the Czech Republic and has been living in Prague for almost thirty years now. In 2005, she and Camille Hunt founded a private art gallery called Hunt Kastner that is now one of the most successful art galleries in Czechia. Its aim is to exhibit contemporary art (mainly Czech) and support both older and younger generations of artists while introducing them to the art world abroad.