Wow, this is amazing. How did BYU come up with her diaries? If she
died without any heirs, where did the rest of her belongings reside?

I thought to contact Barnard, Nina's alma mater, and spoke to their
archive and their registrar. While certain material is sealed
(grades) I'm hoping to swing down there in May to view the 1933
yearbook and see her list of classes.

Why not.
-Alex