This sounds exactly like my situation roughly a year ago...with the caveat that I did literally all the wrong things. It's hard as holy hell, but detach, find out who you are for yourself, and become the best version of yourself. Not for her, but for you.
Just to echo what was said above, NOTHING will be the same as it was before this happened. The longer you hold onto the past with your W, the longer this will be drawn out. She is a totally different person now and you will have to decide whether you want her in your life anymore. I found out the hard way by hanging on how truly awful once loving spouses can end up treating each other.
ME-37 W-34 T-8 M-4 ILYBNILWY BD: 8-31-2015 EA suspected - 11/1/15 PA confirmed - 1/22/16 W files for D - 2/4/16 D - 8/9/16