Andy & I are ghost hunting partners, & we have always referred to this lady as Minna, because she appears near Minna Hageman's grave.
Andy captured a photo of this same woman on our first trip to the Grove together. She has the same hair; length, style & color as the woman seated in the picture. The only downside is she looks far away, but we were able to see some details.
In this picture, I am seated on a tombstone wearing blue. Minna is to the right, outlined in the box. Someone tried to debunk her as a tombstone, but there is no grave at this location. She's walking towards me, on the path near her grave, at the entrance to the cemetery.
This photo was taken by Andy. He posted it but I'm not sure what he named the thread.