WOW -- unexpected!  cool kick back chick that disapeared is back.  She walked in and went straight back to her original spot all the while staring my direction.  Eye contact was inevitable, it was strong.  SHe cracked first.  She said "whats up?"  -- cool, thats what I would have said if I spoke first.  I made her aware I noticed her absence by saying "youre back"... she responded with she was hungry and left to eat.  I am tempted to respark the conversation, with a question like "So, what are you waiting for?"  she is apparently tired, as she is nearly asleep already.  Hmm....
Asked her what she ate.. she says sandwhich I infer subway and follow up with confirmation question.  confirmation received.
She offered her number. very interesting person.  looking forward to future communications.  =]