Help in locating Krakowski family from Sweden


I am searching for a woman named Tosca Krakowski, that shows up in the following testimonial page in Yad Vashem.
The source states Tosca is a daughter of Rafael Szczuciner z'l who perished in the Holocaust. The source was compiled by jews members of the jewish community of Goteborg, Sweden. 
I am guessing Tosca may have lived in Sweden sometime. (Her Hebrew name may be Tovah (Tauba in Polish).
Rafael is my relative, and me and Tosca have never heard of each other.
I already tried Sweden Jewish Genealogy Society, Sweden State Archives and Sweden Jewish institutions (Chabad, for instance).
The only thing so far is the following record in the national archives, on a Naftali Krakowski (possibly married to a Barbara Krajnik)

If any of you can help locating her whereabouts, I would appreciate.

Avraham Yehoshua Kahana