A reader writes: Basically, everything I’ve ever read recommends that a toddler not be shielded from the truth, and I believe that. However, there is a set of special circumstances here. My daughter saw her grandmother every day since she was born, as my mother cared for her while I was at work. The care-giving stopped abruptly last year. That has been very hard to deal with, but my older children were victims of a terrible crime by her husband, and for my younger child’s safety, I had to stop my baby from seeing her grandmother because my mother refused to leave this man. We didn’t have any luck explaining that to a toddler.