I agree with DnJ. She sounds so confused. My H does this all the time too. That staring off into space, the total despair and then suddenly so up and overconfident and either surly or weirdly calm. Your W has no idea what she is doing/saying. You should especially not take in anything she says about your M being dead for years. All of our MLC'ers say the same thing. It's so hard not to protest or explain, I know! But whenever I hear that stuff and manage to remember that it's not true, I get a lot of peace.
I believe I will see the bounty of the Lord in the land of the living. Wait for the Lord with courage. Be stouthearted, and wait for the Lord.