If you google her name you will find a link about the funeral of Robertus Cramer. This is a list of the people present at the funeral, and if you scroll down to item 66 you will find her name. Additionally if you google 'DBU Ceylon', you will find you are able to access the genealogical records of the Dutch Burgher Union of Ceylon. Click on the 'V's or scroll down to the van der Wert genealogies. You will find Anna Cornelia Baade mentioned at the very beginning.