I think that if you want to make sure to lose her forever, go ahead and confront.
There is no contradiction between having power and respect and not confronting her. I'm a little surprised by some of the input you have received here. Have you finished reading Divorce Remedy?
You say no more pleading or begging - are you still doing that? Can't you stop that without confronting?
One of the things you learn on DB, is to not act impulsively, and to frequently not act at all. Do not act on feelings.
Confronting her is not setting a boundary. In this case, it's most likely burning a bridge.
Imagine that you are finished with the D and you are 5 years down the road. You have a full and happy life with hobbies and activities, work and friends, and you take great care of your kids. You interact with your ex about the kids in a friendly and respectful manner, without arguing or interfering in each other's lives. Your Ex sees a man who is in a good place, who is friendly but doesn't need her to be happy, who doesn't focus on her and what she does, but is neighborly happy for her when she does well and just as distantly neighborly sympathetic if she complains.
Can you pretend to be there now?
M 16 yrs, WH62, P54 3 adult blended kids EA 11/13, BD1 6/14 PA fall 14, BD2 2/15 Piecing 2015, BD3 12/15 Separated 4/16 WH moved OW in 5/16 Divorced 6/15/17