WoW! Such strong reactions from your wife. I am sad to hear that she blames herself for a miscarriage. There is no way that could be her fault. It is a 1 in 3 chance with any pregnancy that it will end in miscarriage, and even when doctors try to save a miscarriage, they are rarely successful. I had several miscarriages, in addition to my two healthy children.
It all sounds good. Keep doing the homework, go to the Post sessions, it does get easier, and happier over time.