This person is commemorated on a memorial in Harlingen. More information on this memorial can be found (in Dutch) on the website of the Nationaal Comité 4 en 5 mei.
Gabriël Boas and Dina Pais were the parents of Sara. Addition of a visitor of the website
In addition, Jokos files (numbers 392, 55325, 55324) on this family or other family members are at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.