I don't think I have posted to you before but I have been reading along. I am so sorry for what you are going through and all the messes your H left you to deal with.
As far as the email, I would leave the question "are you beginning to think that I/we did the right thing" alone. Don't respond to that at all. As far as his comment about calling, maybe just keep it really simple again and just say something like it would be fine to call or something along those lines.
