Ditto that. If she is that unhappy about so many little annoyances and is unwilling to consider counselling then my guess is she already has, at the very least, her eyes on someone else. As Jeff Foxworthy says, "if she hasn't already saddled up another horse she has at least cut one from the herd." She may have been planning the divorce for awhile and is just building her case in her own mind, i.e. giving herself an excuse. It is my experience that when divorce happens one person is prepared while the other is totally blind-sided.
That was exactly my experience. My father's advice was really good: If she starts mentioning the D-word, pack up her and her stuff and take her back to her parents. There's no room for a defeatist attitude in a successful marriage. Complete commitment on both sides is vital.
In a way you're right.........I had no preparations the night I walked out on my abusive ex-husband and spent the night sleeping in my office.