Psychology Today | 28.08.2026 05:29Q: My co-parent and I have been parallel parenting since our breakup. We communicate as little as possible because keeping our lives separate prevents arguments. Recently, our son came home from his father's house very upset. His grandfather lives with Dad, and they are extremely close. Grandpa has cancer and has become very thin. Our son noticed and was frightened, but he was afraid to ask Dad or Grandpa what was happening. When he came back to my house, he asked if Grandpa was going to die. I didn't even know Grandpa was sick. I was completely unprepared to help him. How do you know when it's time to share information?