Dear Prudence I’m not sure I can play “grandma” here. Advice by Enter your email to receive alerts for this author. Sign in or create an account to better manage your email preferences. Unsubscribe from email alerts Are you sure you want to unsubscribe from email alerts for Shannon Palus ? April 25, 2026 8:00 AM Photo illustration by Slate. Photo by msan10/iStock/Getty Images Plus and Dimple Bhati/iStock/Getty Images Plus.  Dear Prudence is Slate’s advice column.  Submit questions here . Dear Prudence, I raised my stepdaughter, “Sue,” from the time she was 6 years old and considered her the same as my own daughters, even after I lost my husband. Which is why I can’t get over how she hurt our family. She had an affair with my daughter’s husband and got pregnant. The baby is 6 months old now. My daughter is trying to make a go of repairing her marriage, mostly for the sake of her two other children. But it has been impossibly hard for her.…