I am not an expert in piecing. Something I have not experienced.
You might be referring to this "thought process": You have a private list of behaviors that you expect from her. Your non-negotiables. When she asks "What will it take for you to take me back", that is when the "I am not sure, what are you willing to change?" comes in. She will list things. "That is not good enough" is your response.
Sounds like you did not take this path. I am sure there are things that you can still do. There are 100's of solutions to each problem.
Lets take the "sex is not good". Go to the store and buy a few books for you to read to help you improve. The more important part is find two books for her to read. Lets say "How to give a better *** job". Give her the book as homework assignment.
See how she reacts.
Personally, I would want my lady to react enthusiastically. Anything else might need to be addressed.
"What is best for my kids is best for me" Amor Fati Link to quotes: https://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=2879712