K.B.
I would not have it out with her. You will feel worse and she will get mad.
It is irrelevant what you and other mothers do. You could always tell her you have a lot of friends and family and you have to cut back in order to have time to see them. A woman told me that and even though I later found out it was a total lie, I felt better than hearing all the things she disapproved of about me and my parenting.