"Until she shows an ounce of regret for what she did to her marriage and family there should not be any sleepovers rated G or otherwise."
She has. She has told me many times how it was not the right thing to do. She has told me how she should have handled it differently. How she should have directly talked to me when she was feeling that way instead of using hints and then going outside the M.
She has said this to me in front of her family.
She knows the damage she is doing. Unfortunately it isn't a switch than can be instantly turned off. Progress has been made. When this first happened, she couldn't look her father in the eye. As we have progressed, she is rebuilding the relationship with her family. Her mother did the same thing to her father with no regrets, only anger. My W is afraid of becoming her mother.
Actions speak louder than words.
Perhaps her losing the job and OM are related.
Personally I think the whole dinner and sleep over was to make sure Plan B ( you ) was still there.
If you had cancelled dinner or ended it after dinner then I think she would have been a little more determined to make sure Plan B was still there.
I also think your confusing regret with guilt of being found out and guilt of what others think of her.
Flowers always make people better, happier, and more helpful; they are sunshine, food and medicine for the soul. unconditional love is awesome!