I understand you want hope. It was designed to help you no matter what happened. Let's say she never returns, you need to make sure to take the lessons learned. Let's say she is at some point inclined to return, you need to make sure to take the lessons learned. But I did want you to think about it and you have.
I have been divorced over 6 year, so my marriage is done. One thing I learned through all of this is not to have expectations of others. (Yes, I do have some basic level for coworkers, bosses, children and even my ex.) What it does for me is this. When things go wrong, my disappoinments are easy to move past. When things go well, I feel that I have been greayly blassed.
Now, I know it is hard to imagine and I do come from a very detached state from my situation which means I can be detached from the stories here, which I have seen a million times. We never know what tomorrow holds, but whatever it does hold, I know for a fact that you will be ok.
Good luck. Stay positive. Keep doing the things you have to do to be happy.