It is always easy to re-write in your mind what you did right.
Let me recap just a few things, and then I really do recommend you go to piecing, because those folks are just GREAT at rebuilding a relationship and giving advice accordingling.
I tried "going dark" before I had read DR. She called every ten minutes for hours and eventually drove over to my house to find me outside landscaping the front yard. She was very angry with me for not answering the phone.
Having read DR, I now understand "going dark" is a last resort. I feel that my use of this technique was inappropriate for my Sit and regret having done it.
The book said to quit doing the things that don't work, so I stopped "going dark" and things have improved
It has been a month since she moved out. She keeps finding reasons to come around and she calls me several times a day, for no particular reason. We have simple conversations, nothing heavy, like you would treat a first date: no pressure, well timed compliments, you know the drill.
You kept up the friendship, which you mention over and over again. That was beautiful.