BDB Sometimes silence from here is a good thing. Gives you time to think. That conversation will not break your marriage.
She was hoovering and looking for some guilt justification. So just leave it be. And next time you know what to look for and toss in a truth dart. Just remove yourself from the justification.
I will recommend that if she asks you to move out or you think you should move out.
DO NOT.
If she says that you should move out. You reply.
"No. I have thought this over. You are free to leave the home and find another place but the three of us will remain in our home. You are free to take your personal items but everything else will remain in the home."
"We can work out a visitation schedule once I know that the children will be safe visiting you at your new location."
Now as for her behavior. Stop reading it. Your going to be fine no matter what happens. She is most likely tagging you and using sex to draw you back into limbo land. Look at what you did leading her to change her behavior.
Flowers always make people better, happier, and more helpful; they are sunshine, food and medicine for the soul. unconditional love is awesome!