Is this the end of my marriage?

[P17]

I just wanted to share a text correspondence between me and W:

W:
I'm working on Monday but off on Wednesday so can make then. Let me know what time is best. Thanks.

Me:
Wednesday was already agreed when you sent me the dates list. 15.45 until 19.00.

W:
OK that's fine. I have found the book & case that goes with yr Mum's CD. I'll bring "17 again" for D & a wig for her then. Let me know if there's anything else she needs.

It's just so ANNOYING normal?! Like I haven't done anything wrong! This is a perfect example of why I need NC.

I am SO tempted to reply to the last text with "D has asked if you can bring her step-mum back and if she can work to becoming her loving family again'. I won't but it is tempting.