Do you think the letter from the attorney caused her mood to tank?
Maybe it just reminded her of her original and "true" feelings? (I put that in parentheses because I believe that she thinks they are true, but I also think her resolve is weakening in the absence of fights and stress)
I'm no expert on this, but try to give her a reason to doubt her decision tonight. She will have been thinking alot about that letter from the lawyer. Make her wonder if she is doing the right thing by being loving and attentive, as much as she will let you.
By all means tell her about the dream. If tonight is not a good night, then wait til another night. Well, actually, Blackrook, I just had a thought: Do you WANT a sexual relationship with your wife? I mean one with some regularity? I am operating on the assumption that this is something that slipped by the wayside with you and that you want to re-gain with her. Is that the case? I don't want to be encouraging you to act sexual around her in an attempt to win her back, if you don't really want to make this a part of your life.
But that is the assumption I got and I think I'm right! I wish you the best tonight...I hope her mood is bright again.