Your situation is a scenario that I fear; my C taking me down a path that conflicts with DBing. So far, my C has not done that. I have told her my approach and she admitted to not being familiar with it but has not refuted it either. She says that most of the issues I need to concentrate on are mine, and stop obsessing about W.
As for your sitch, personally I would feel uncomfortable going of the DB path right now. As has been stated in the DB/DR books (and I take even them with a grain of salt) many C's are interested in the individual health of their patients, sometimes much more than the health of the marriage. If she gets it in her head that the M is rotten and cannot be saved (and I am NOT saying she has) then she could start making suggestions to you that would force the issue in an attempt to show you the rot. I will temper that by saying that in the end, SHE is the professional and we are merely people who share a common experience and way of dealing with that experience. Maybe if you just ask her the same questions you're asking us, she could explain herself a little more and maybe validate your current approach. I am pulling for you, and really want yours to be a success story!