It’s been my experience that, even if she doesn’t like her husband very much, she knows when she married the jerk.
It has been my experience that the only time a woman might hesitate or not speak the answer is when they think it might give some clue as to their real age. :0)
In trying to be gentle this beautiful Spring morning, I’m going to give her a pass on this because remembering the length of time she has been married is a reminder that she is getting older, and older, and older. No woman wants to be reminded of that.