Newbie12, many moments call for slow play. This is not one. I'm serious--what day do you get the kids back for your 50%? Taking the kids isn't something to let go for a day, a week, a month.
"I get you're frustrated and miss our home. What day do you propose returning the kids for my 50% custody?"
You can't be that great Dad you want to be if she's taken your kids away.
(Note, no arguing in the text above. An unsatisfactory or no response goes to the attorney.)
