Ditto. If you want more drama in your life, then proceed with the "who are you again?" questioning. If you want to move on with your life and not have the added stress, then let it lie. Karma is a cruel mistress, so be careful how you proceed...
shes probably trying to see if theres still something between u guys. if she gets too neurotic, just block her already. if she makes a bunch of new email addresses i think u got a stalker on ur hands xD