Your questions are all common questions that we LBSs go through.
First, is it possible to R? Absolutely. It always is. All but those in the worse situations always have hope of this happening. We have one guy here whose W has come sniffing around after 4 years of being D'd (ItHurts). So yes it can happen. However, you shouldn't have that expectation, and in fact you should just consider that it never will happen. That is what detachment is. Moving on, but having an underlying hope that R could happen one day. Admittedly most LBSs eventually move on and are no longer open to Ring. That is always your choice. If she ever comes back YOU will have the power to decide what happens.
"Looking for input here to. Is she totally done with our marriage and moved on? Or, is there a realization (or crash) coming when she is actually not with me? I figure there will be a huge euphoric feeling from her initially being "free" or however she would like to word it. She gets to be empowered by leaving. "
A lot attempted mindreading going on here. First, we have no idea if she is totally done with the marriage and has moved on. Likely she doesn't even know that! And yes, there is always the chance that once she completes her move she'll after a period of time freak out and wonder what in the world she has done. Again, not idea to know. She may have an euphoric feeling of being free and empowered. Or not.
The problem here is you are too focused on her! What are you going to do to move on once she is gone? How is your GAL going? What are you doing to work on yourself? Leave her alone to own and figure out her own crap. You need to be working on YOU!
"I am resigned to the reality and only what I can control."
Start here. Facing reality is good. But I see you focusing on a lot of things you cannot control. That was my last point. Stop worrying about what she is thinking and feeling. Concentrate on what you are thinking and feeling. Many LBSs think that D is going to be the worst thing possible, and then find out afterward that they are the ones that feel free and empowered! This is what working on you is about. When you detach, 180, and GAL you realize that you are ultimately in control of your happiness. Not her.
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018