Isn’t adultry a reason to get a divorce in the Church’s eyes? Or well, God’s eyes.
There is NO "reason to get a divorce".
There ARE reasons where separation is
allowed (matter of choice), and also reasons where annulment is
allowed (again, matter of choice). While this may seem minor , it is not. Some women choose to stay with a spouse where she has legitimate grounds for separation or annulment. The decision is her choice.