I feel for you.

If you do file for D, I would do some research in "Right of first refusal". W will not be able to "Dump" D4 off to anyone but you.

Keep letting the tears flow in private. It is healthy.

Stay strong. You can handle this.

"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