Here is what needs to be clear to you- your goal is 50-50 custody and agreeable terms on support. That's it. Don't let bitterness creep into this. Don't let your judgment be clouded by what you think she may be doing. Maybe she's being vindictive, maybe not. It doesn't matter because she can't control you anymore! Unless you let her of course....
Try to keep emotions out of it and look at this all as a business transaction. The romance part of the R is over and now you are unwinding things. She doesn't "have to realize" anything, and probably won't. She's still stuck in blame mode and will be for a very long time. That is HER problem. Don't let her drag you down there!
"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