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I am sorry to hear of this. She sounds confused so I believe the best thing to do is to let her guide things...pull back and let her be the one to reach out. I don't know that she will but if given space and time, it is possible she will miss you and want to reach back out and reconnect.
In the meantime, you must focus on yourself and your health and you cannot let yourself get sick over this. I understand you are sad and that is normal but get back to exercising and eating...if food is hard to get down then start by having some protein shakes.
Let her come to you and hopefully with the space, she will.