The way you have put up this case here, I have no other choice but to believe in you. 1) This is not a unique case, many others have gone through this. Of course, when it happens to you, it flails you the most. 2) How many times have you talked with her after this happened? Call her for a lunch or something and tell her everything that you have to say. Cry or make her cry or both. Let her know EXACTLY what this all means to you. 3) If she tries to divert, make excuses and don't feel for you, then FORGET HER DUDE, AND MOVE ON. 4) If she decides to come back, it's up to you to decide. You must be aware of her nature, behavious and tendencies. Just ask yourself, whether it's worth for you to accept her. 5) TIME is the greatest healer. It heals every wound no matter how perilious it seems now. Does that make sense?