Refresh my mind. She has shown no remorse. She has not ask for your forgiveness, any emotional breakdowns over her infidelity, signs of humility......or anything exept niceness? Did she volunteer to leave the bedroom, or did you ask her to leave it?
Am I understanding correctly that she initiated sex once and you tried to initiated once. But she feels bad whenever you have sex with her? And, her plans are to move out of the house. Do I have everything right so far?
If this is where you sit currently, then I would not consider you in piecing, yet.
If she wants to leave, then don't stand in her way. Let her go. She needs to make up her mind. However, neither should she expect you to wait for her. (Now, if you want to wait for her to come back home, then just don't tell her the door will always be open or something like that, okay?).
I hope you will start posting more often and giving us more details. Think you can? I'll look forward to the next one.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!