So yea, she's annoyed that you can't accommodate the time off required in the summer with the kids. My question would be why those particular 3 weeks?
Let's be honest here. Before you and her broke up this wouldn't have been an issue. But now? So I get the 50/50 thing. I've just done the same with the STBXW and agreed what time I spend with S10 and what time she spends with him. All very amicable.
But more to the point. The feeling loss thing. I have no idea if my STBXW feels any loss. None, but now I done care. And I think this is a crucial juncture. She's p!ssed at me because the finalisation of the financials of the D isn't going her way. Tough.
Remember how I said I think she should pay for the D? Well, she doesn't like that.
However. Your point about meeting someone else. I thought about this as well and realised, for me at least it was only pride that kept me hanging on.
So I let it go, just like V said I should do.
And I'm much happier now.
Peace
Me:43 Her:42 M:14 S:9 EA started 2014/03 (or there abouts) PA started 2014/05/30 BD:2014/11/05 I left 2015/10/01 I returned 2015/05/02 She left 2015/06/10 OM still on the go.