Thank you to everyone who has been adding information about this unidentified lady. Does anyone happen to know where unidentified deceased are buried in this county? I, too, feel she lost all her loved ones along the way, and had no one left to feel connected to in this life. I'm thinking perhaps long time civil servant who recently retired -- thus no one from her office would be missing her. Maybe after her job ended, she felt she had no one else to connect with and nothing else to look forward to. There are many who live this way, alas.
I used to think it was a bit strange that not one single person recognized her -- not from the drycleaners, restaurants, grocery store, apartment building/neighborhood, nail salon, local drugstore, car repair (if she had a car, she may not have if she lived in that neck of the woods), doctor's office etc. -- until I remembered the case of "Mall Man," in which a young man who committed suicide at a mall remained unidentified for years -- and it turned out his family did not live that far away from where he died. Perhaps this lady came from Maryland or the District, and this is why she wasn't recognized in Annandale/Fairfax County.
It just seems very important that her identity is discovered -- that even though she must have felt unimportant in life, at least to us, she matters.