Ah, that makes more sense. Well I don't blame you for cutting contact, but people like her thrive on drama and conflict so she will keep trying to get to you using either honey or vinegar. To people like that it doesn't matter, negative attention is just as good as positive, the goal is attention, doesn't matter what kind. So don't respond to her NO MATTER WHAT. If she fires off a nastygram to you then just delete it, or better yet block her number on your phone so you never see it to begin with.
