She dazed off every few minutes in a dead stare then would turn and smile when customers came near.  
"How are you" They would say.  
"Just fine.  It is a beautiful day. " She said with a smile on her face but not her eyes.  
She had gotten good at faking it.  That everything was alright.  But when they walked away the smile faded into deep thoughts.  No one knew her issues.  And neither did I.  I was just watching her.  Watching the girl with green eyes.  Act like she was just fine.