I agree with DLS - your W moved out. She doesn't get to 'move back in' for a holiday because she wants to spend some time with her friend. If she wants to do some stuff with friend, they can meet up and do stuff...
I would just let her know - No, that doesn't work for me W....
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus