She is married to Jacob de Virij.
Permission for the marriage has been obtained in Fort Crèvecoeur, 's-Hertogenbosch on June 24, 1634.Source 1
They got married at Fort Crèvecoeur, 's-Hertogenbosch.Source 11634-06-24 ondertrouw tot Crevecuer (getrouwd tot Crevecuer), Jonckheer Jacob de Virij, Capiteijn met, Joffrouw Dorethea van Cassiopijn
Axel, transcriptie ref. trouwboek 1604-1648, 1653-1691, 1691-1729, 1729-1749, 1750-1791 en 1791-1796 http://www.geneaknowhow.net/script/zeeland.html