Personally I don't believe in "breaks", especially in relationships that have lasted more than a few years. Once someone leaves, the relationship is over. You tell her that once she leaves, the door is shut and locked, and never being opened again. Even if you don't believe you're strong enough, just bluff it and make sure she understands it. If you leave the door open, man, it's going to hurt for a long time.
To be honest, she doesn't sound like a very stable or wise person. She sounds gullible, indecisive and withdrawn. I've been where you are though, and I've heard people try to say things like what I'm saying. It always feels like the people trying to give you advice don't have all the facts, and they don't share your knowledge of the person who just left you. Part of you wants to stick up for them, or at least stick up for the part of you that loves them, but the better part of your conscience tells you that it's just plain stupid to defend someone that's causing you pain. All things considered... it's just a very fscking confusing time, with a lot of internal conflicts. You just have to try and stay sane until it's not so confusing anymore. It's a battle between strong emotion and common sense, but common sense always wins... just takes some time.