It sounds like to me that she is judging every thing you do under a microscope to decide whether she is filing for divorce or not.
I think most of them we can figure out but some are subtle and didn't occur to us.
If you accept dinner, it's good; if you don't complain about anything she's doing wrong (cell phone, staying out all night, etc) it's good; if you go out of your way to help out, good.
When you stray from this, she says to herself OK forget it; this proves nothing has changed and so I should file for divorce.