When women are in their fifties they age in different ways and they have to come to terms with slowly losing a youthful appearance. Most women don’t want to talk about it but they do feel they are losing themselves. It’s not unusual for a woman to start not wanting sex. They can develop ways to distance so they don’t experience the uncomfortable feelings that come with aging. There is a strange powerless feeling the woman doesn’t want to experience and doing certain things or talking about it becomes unpleasant.
You are 57 and could experience a younger woman as many men do. It’s not the same for a woman. This creates a sense of vulnerability that women find very uncomfortable. This can be so uncomfortable that a woman may desire ending marriage as a way to escape.
Society tends to be very cruel when it comes to aging women even when they try to do things to retain a more youthful look.