On 14 February 1246, she founded the Cistercian monastery in Herwardeshude, a village at the mouth of the Pepermölenbek, between the later St. Pauli and Altona.
Pada tanggal 14 Februari 1246, dia mendirikan biara Sistersien di Herwardeshude, sebuah desa di mulut Pepermölenbek, di antara St. Pauli dan Altona yang kemudian.