 Specialising in Polish, German and Prussian history, she wrote "The Other Prussia.Royal Prussia, Poland and Liberty, 1569–1772", shedding light on the history of the Western part of Prussia in which mainly German-speaking Protestants were subject to the elected King of the Polish-Lithuanian Commonwealth.She also stayed at the Free University of Berlin in 2000, gained a Leverhulme Research Fellowship, and several guest scholarships (University of Greifswald, at the Herzog August Library, Wolfenbuettel), an AHRC fellowship (2011), and served as advisory committee member of the German Historical Institute in Warsaw and as member of the Working Group on the Baroque, Herzog August Library, Wolfenbuettel.