Well, I'm not sure what input you are looking for, but, if the circumstances are such that you no longer want to be in the marriage, then I guess you are doing the right thing for you. I will say that it doesn't sound like your wife has done much for her sobriety other than just stop drinking. The bad behavior remains...the matter-of-factness, the lack of remorse, refusing to discuss anything or own up to the bad decisions she made. Lack of trust almost ensures that a marriage will not stand.
I hope things work out well for you.