So sorry Tree! I know it hurts so much. Will be thinking of you. Look after yourself..... even though it was not unexpected it will still have come as a shock, and your whole body will no doubt be reacting to it. It is so normal.
It aint over till its over. She needs this time to sort herself out. It may take a while but guaranteed that she will eventually discover for herself that she is the sole person responsible for her happiness and she cant blame you for everything. Heaps of people reconcile, so dont lose hope just yet.