I don't think most therapists totally get this or help. I really believe a support group similar to AA or Alanon support groups is the answer. No one knows how this feels. Some parents get angry and seem to handle it with their anger. I can't do that, but I know that taking care of myself and not ruminating about it is best for me.
I am looking to start a support group soon. I would like it to be a group that sometimes gets together face to face, but it could also be online. I am looking for those who would like that kind of support to deal with the pain. It doesn't go away, but we can deal with it.