You're probably going to get a variety of responses on this one.
Only you can really decide what the right step for you. My advice is to "strike when the iron is cold." Ie, don't stop speaking to someone when you are feeling furious. Cutting off contact is a big step, and you should think about what you want to do carefully. Allow yourself to cool off, and decide whether you want to make it official, or stop talking to her as frequently, or as the PP suggested, talk to her in limited doses.