Don't know how you feel about it, but to me it seems that she would need to start seeing a therapist for how personal problems, before the two of you start going to MC. If she really attends the sessions with a therapist, then you will have a clearer view of her true intentions. If she's serious about the M getting to a healthy place. But if she by-passes on the therapist, she might do the same with a MC.
I hope you will pick the MC, b/C you know what kind to get. Otherwise, you stand a chance of getting one of those who just tell the WAS to do whatever makes them happy.
BTW, don't suggest DB or DR as one of the sources for your W to read.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!