This photo is small, only about 2×3, and thanks to having scanned it we can enlarge the digital version for study. The young woman pictured was probably named Lii’le or Liile, something like that. Liile was an Estonian Girl Scout – or as they are known outside of the US, a Girl Guide. She wears a uniform similar to the early American uniforms, with a neckerchief tied under the collar. You can just see the insignia patch over her shoulder.
On the reverse of the photo is written “Målestuseks Liile!” which translates as “Memories” or “Remember me” or the like.
The photo was dated in the European fashion “28 11 37” which to our American minds would be November 28, 1937. Further, it was imprinted “Kunst-Foto Osol, Tallinn, Mundi” meaning Kunst-Foto (loosely translated as artistic photo) in Osol, Tallinn & Mundi. Tallinn is the capitol of Estonia and Mundi is a small village also in Estonia. I can only assume that Osol is also a town or village in the country.