Dear Christina,
The passport is dated 1939. The first sentence reads "the mayor of the city of Utrecht declares", so at that point she must have lived in Utrecht.
The birth records are public (more than 100 years ago), but only available at the archive of Haarlem up until now. Also the population registers, they are not part of the index "digitale stamboom Kennemerland" yet (
http://haarlem.digitalestamboom.nl/).
She will also appear in the population registers of Beverwijk, also available at the archive only.
The digitale stamboom lists an interesting entry:
Beverwijk, 15 Aug 1902. Dirk de Wit, born in Buren, 29 years old, school teacher, son of Dirk de Wit and Hendrika Goudsblom, marries
Wubbina Engellina Johanna Petronella Swalve, born in Beverwijk, 22 years old, daughter of Freek Bellinga Swalve and Helena Catrina Koster.
It is my bet that these are the people you're looking for, but it should be confirmed by looking up records.
Good luck, and kind regards,
Lars Roobol
http://www.familyaffairs.nl