Yeah it's less well known, I mostly originally knew about it because of my history of interaction with folks who have borderline personality disorder (it was originally developed to treat it). And yeah one of the really big things it does that cbt doesn't is working on emotional control with stuff like building distress tolerance.

It's definitely no fun, my wife is really not enjoying it, but it is really helping her.

I generally encourage anyone whose struggling with destructive thoughts/behavior or ptsd to give it a consideration