RSF, This isn't that big of a deal. Nothing is different than before. Obviously you two didn't agree on the kids being around OM. Don't expect her to bring the kids by today. Do not contact her today. The kids being with her is a good thing for you - you need to be a incredible Dad right now. Stay busy - body and hands.
you communication with her needs to concise, bold and decisive. how can you improve on that? look at your history as a couple and give yourself some honest feedback. you can handle it.
M22,H45,W45 S21/18D12 Retain faith that you will prevail in the end, regardless of the difficulties and at the same time confront the most brutal facts of your current reality, whatever they might be.