This is a new thing for her with you having the kids 2 weeks (which I think is QUITE a long time for the kids to be away from either parent).
It is odd that she agreed to the 2 weeks. W has been very controlling not wanting the kids to stay overnight with me, she doesn't want them getting used to being back at home, she says what the kids and I should do on my days out with them etc. I then had enough, stood my ground, calmly and firmly and she backed-down. I don't know why.
