You are making the wrong assumption. She may come back if she feels attracted to you. There are many other things that also have to fall in place, on both sides. Most people don't make the required changes. No "together at last".
"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