I am so very sorry that you are going through this. I wish that it hadn't come to this, and I know you've done your very best to ensure that it didn't. But here you are. And here she is - and she doesn't like it much either.
I do hope that things will settle down, and I think that they will. It will take time though, at least a few weeks, or even a few months. She must be very shaken up right now, and she is reacting in a way that does actually make sense when you think about it from her POV. Not that that makes it any easier for you.
You will get through this, and your kids will too. They will NOT be traumatized for life b/c you will not let that happen. This may be what your W needs to get help, which may or may not save your M, but could save her and her R with the children.
FIB, thanks for thinking of me at this difficult time.
Best, Nicola
Life isn't about finding yourself; it's about creating yourself My thread: Trusting God's Plan