I still don't believe in the door slam, even in extreme self protective circumstances. Far fetched example of escaping abuse or something, I still believe in getting a clear, direct message somehow to the other person of what you are doing, what you want and why. I think there is value in that.
If there was no extremely large sums of money and a house involved, I would have let it go long ago. There would have been an initial shock, then possibly trying to communicate, but after it was clear that the other person was okay and simply choosing to disappear, I'd have move forward on my own rather quickly. And, to me, that is all about self-esteem. If you believe in yourself, and do the things daily that you need to do in life, you will do fine.
I also never say never. If someone door slammed me and later came back out of the blue, I would listen. I would have my guard up, and that person would have to re-earn and re-establish trust with me over time, but, it's possible that person could then have some new place in my life again.
Feelings aren't facts. Feelings have value. But, they don't have value without facts.