I like this, the woman has an expression of curiosity, expectation or even apprehension that makes me wonder what she's looking at, whom or what she is waiting for. I agree with Ali about the train station atmosphere, enforced by the blurry, shadowy figure in the background.
The photo is surprisingly grainy (not a fault, quite the contrary) for a Delta 100, did you rate it at a higher ISO or give it some special development?