The Borg made an alcoholic out of my wife, as well. Get help for that. Seriously. It isn't a laughing matter like Homer Simpson and Barney Gumble. It kills people. Fighting it is a tough battle but it can be won.
Could you offer your wife a compromise? (I assume she WANTS to do the SAD part.) Tell her you'll do the SAD part with her if she accepts your lead in Family Worship Night every week for the next six months. If she accepts, make it a solemn vow to each other so she can't back out.
Then use only the Bible and Steve Hassan's techniques to teach her to think for herself and see what a crock the Borg is.