I think I get where you are coming from. My W worked with OM. She had "strong feelings" for him. She found it "hard." She was not overly affectionate towards me. I got pissed. I suggest you do that same.
This may seem counter intuitive, but R is not about saving your M. It's about saving you. If she doesn't like that then you won't stay M'd, but YOU can still recover. If she decides she wants to continue to ride at the PBSR2 fun park, then great.
As I read your posts you are worried about her. What she is doing, if she loves you, if she wants you, yada, yada, yada. What do you want? IMO that is the only question a BS really needs to ask themselves. What do you want?
Forgot R until the following has happened:
1) Get yourself an hour or so all by yourself. Start thinking of what you really want your life to look like. What do you love to do. Make a plan to do it. Take the kids on vacation without your W. Take a camping trip by yourself. Join a sports league. Hang out with the fella's. In short, get your head space back into focusing on you and not on her. Forget your M, its dead anyway.
2) NC - No Contact means none. That includes work. Tell her she has 2 weeks to figure that out. He can leave (get proof) she can leave or else you will start the process of breaking up the M. Don't tell her when, take your own sweet time, but start that process if she does not agree to it. She can never see him again and if she does, she needs to explain it to you proactively. Tell your W that you want it to work out between you, but she needs to get into IC and figure out how she allowed herself to violate her promise to you and most importantly how she allowed herself to lie, cheat and steal herself. Why is she not an authentic person who tells the truth? Why did she violate her own ethics? Why did she betray herself? She needs to figure out what she values and explain that to you, but first she needs to understand it herself.
3) Get thee to a lawyer - Does not matter if you D or not. She should know you are going, she should know that you are only taking steps any rational person would after being cheated on. You are making decisions to find out exactly where you sit financially and legally after your W emotionally and physically left the M. Get papers written up to divorce and have the lawyer keep them.
4) Figure out where every cent is. Figure out exactly how you want that money split up. Then talk to the lawyer about how that all works. It is critical for you to know this stuff so you can make decisions about your life.
5) Get a calendar out and get busy with life. Make a plan for every minute of every day at first. Build in some you time at the library or where ever to read here on SI and about recovery from trauma. Find new friends, start building a support system outside of your W, join a new sports team, club or group. Hang out with friends, do things you love.
6) Get into IC with the express intent of healing YOU not your M. Figure out what you want out of life and have a pro help you.
Forget about sex for a while with your W. What I recommend is giving the above about a month or so. If after that amount of time your W is NC, has quit her job and is in IC, talk to her about R. Included in the R contract can be regular sex with her if you want that.
In short - break off from your W, figure out what you want moving forward, explain your terms to her and what she needs to do and then watch her. While you are watching get out and have fun. She is not the end all be all of anything. You are. She only becomes important again if she stops being an idiot and really changes into a person you want to spend time with again. She's has some work to do on herself. If she does it, then hit MC. If she does it, then tell her you will snuggle. If she does it, tell her you can try an R with her for the M. Until then, its all about you.
take care...