I can definitely understand feeling that way about your mom. I'm thinking about the grandchildren involved. In my experience, many times grandchildren view their grandparent differently. My mom was always very critical of her mother and insisted that her mother didn't really care about her. I didn't see it the way my mom did. I loved my grandmother and I have no doubt that she dearly loved my mother. Had my mom prohibited my contact with my grandmother it would have been very upsetting to me.