Not only is she not interested, but she is very bitchy and underhanded. I can't imagine what would possess me to put a stranger's number on craiglist and form a fake profile if I wasn't psychologically disturbed or extremely offended by them and wanted to humiliate them. You should go into the store and say to her at the top of your voice, something that will embarass her, like 'you don't even feel confident enough to put your real pictures on craiglist?'
This girl sounds like a nutter, imagine what she'll do when you are IN a relationship with her.