Mike,
Maybe you need to make a formal goodbye ritual to this analog? If I understand you, this analog is now more of a comfort and you tell her things. This is not your active A screaming back at you or ignoring you. You no longer have fights with it. Since you have recognized these last ties of guilt regarding the relationship, it seems to me you are on the cusp of divorce. That you are preparing to let go and move into your future. That is a natural point to pause I think.
Maybe write a letter and burn it? Maybe talking to your HP might help bring about an idea for a kind closure too. I wish you peace and healing Mike!