My W was exactly the same. She thought her happiness would make the kids better. She ignored them. No tears when we told them.
They can't let it affect them or they may think they are wrong. That is not an option to them

M 37
W 34

T 12
M 8
D 7
S 4

Need break 4/12/15
W no ring 7/7/15

Separate room 4/12/15
Separate living suggested 8/15
W moved out 11/1/15