I would peak at your county's temporary orders and use that time as a drop off. My county says 6pm. If she bothers you, just text her you'll drop them off at x:xx time. That is YOUR time with the kids, not hers. You are likely in a position where you want to tread lightly and do anything to please her. Don't let her dictate things, it will only get worse once she thinks you're her lap dog.There are ample chances to be nice in other ways, but don't compromise when it comes to your dignity or the kids. It sounds harsh, but if I could do it all over again I would have done so much differently.

Hang in there.