I have never had a DB session myself but I think it lasts only an hour or so, right? Has your DB Coach been really able to see the father/daughter pattern the two of you have? I ask because IMO that is why it seems nuts to say "I just want you to be happy". It reminds me of the spoiled child who pitches a fit to get what they want and the father who gives it to her.
I realize you can only say so much during one session but after so many posts on the board it is very easy to see the dynamic. IMO that is why other forum members suggest the "I just want you to be happy" angle won't work within the dynamic the two of you share.
I guess you really have to define productive. For the past few months it seems (to me and what the hell do I know) you are putting more clout in the "positive" things then what is really there. The dynamic really hasn't changed it just sort of quieted down. When your W is rude and disrespectful to you and treats you like as servant and you do it, well, things are fine. When you call her out on her behavior she doesn't like it and starts up with how much she hates you and blah blah blah.
IOW, you only feel improvement when you do what you have to do to keep your W "happy" even though she is behaving like a spoiled child. See what I mean?
