I don't understand why you would "remind" her that she may not win. And if you really want the boys as much as you say, then why have you already considering taking ess amount of day? I think you should not have any more decussions together and let your lawyer handle it. She knows she can wear you down to get what she wants.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!