Don't do anything out of spite, don't do anything just to get a reaction out of her.
Be a man, do not let her walk all over you, but do not get into fights with her. It ain't gonna be easy.
And fot [censored]'s sake, don't be a mind reader, trying to guess what she felt and what she meant. You do not know what she felt and what she meant, so give it a rest already. Time to develop yourself and that means without looking over your shoulder if your W is watching.
If you stop communicating with her, you will just look petty and childish. Act upbeat around her, act happy (but not overly, she will see trough it).
