I agree with bippy78. My W is acting the exact same way. All over the place up till the last few days and has actually had said all the things bibby78 mentioned. They are trying to justify what they are doing is right. Others on here will say it will hit them at some point and realize. We just don't know when, and if it will be before we move on ourselves.
Try to continue to detach as hard as it is and ignore what she says.