Just wanted to say that I'm sorry that you have to come back here but I'm sure that you will get all the help you need from the wise folks here. Funny thing is that in reading your sitch, I don't get the feeling that it's over between you and your wife. It sounds like your wife has a lot of grieve going on right now and may not be processing it well. I definitely think that you should as much as possible back off and don't pressure anything. I don't think she has fully processed her thoughts and feelings as yet. I know that when involved it feels like its over but from the outside it doesn't sound so to me. So try not to panic but play cool.
That said, I know I need to follow this advice as well but I guess that's why we're here... to help each other, right!!