Hanca Kapko certainly could be Nancy Capp! I'm going to see if I can find a marriage record for her. That would certainly answer that.
Every census (1910 and on) shows the location of the Oleksy/Alexie family in the Johnstown/Spangler area, and South Fork, where Hanca is going to see her brother, is in that area.
However, Anna is supposedly going to an area where I haven't found any indication of family living so far. Perhaps that's because I've been searching for census information in Cambria county and they lived in Mahoney Plane prior to 1910.