Dear cpatlew,
this clear violation of your privacy was certainly stepping over the line.
It is very understandable that you want to go after her - who would not. But then how likely is it that any punishment would have an affect on her long established behavior patterns? And how do you avoid her playing victim which she has been able to do so well in the past? Would you not be just picking up the
gauntlet she has thrown in the dirt before you?
Can you think this through from a self protection angle? Are there things you can do to prevent this from ever happening again? Can you formulate effective actions in terms of boundaries which are under your control?