For ages I though that closure was a fairly meaningless jargon word. It certainly wasn't a word that I would ever have used myself. But this last week I think I found out what it means.
I was visiting my twins grave, 50 years after he died. When I turned away to start the long trip home I felt closure. That part of my life, that duty, that obligation I had felt was over. Somehow I knew that I wouldn't make that trip again but far more important I knew that it didn't matter. The demons of survivor guilt, sibling death and separation from your twin had been laid to rest. In the past, gone for good.
I am glad that you have found some closure but I am sorry that it has taken so long to reach.
I would imagine that survivor guilt is huge, especially for a twin. My eldest son at 18 years old has recently died from cancer. I feel guilt for not having it, for surviving him. My youngest son is just about to be 17. I hope that he does not feel the same guilt for the rest of his life. I am sure that it is inevitable for part of that time though.