Didn't notice when posting the above, but had a text from my W. Basically accusing me of not wanting to take time off work to spend with boys for me and making out it's a favour for her and reiterating that were over and I need to build a relationship with them. To me, it's just twisting the fact, but I responded

I'm sorry it seems that way. I want to take time off to spend with the boys, but was trying to discuss with you how I did it to try and avoid you having 4 full weeks with the two of them on your own.

I did start to type about her outburst in front of them (see above) but bit my tongue. Did I handle that well ? Should I address the outburst when speaking to her ?

That is the first time she has text me in a while at all and got the old grey matter working OT !!!