One thing that you might want to consider is to give her the impression (true or not) that you don't give a sh*t any more and that you are over the whole thing. The sooner you get to that stage, the better for you and the more it will piss her off that you moved on.
As others have said, just move on and don't do anything stupid. She will look like an idiot with her family. In the meantime, there are plenty of other women out there as you know. You will end up meeting someone else with whom you will want to spend your life with and you will be thankful that this whole episode happened.