What two truths does Grandpop have the courage to admit?

From the text:

Grandpop leveled a stare at him. "We did tell you so. Erik did need help. He needed a doctor's help."

Grandpop finally said, "OK, let me be the one to apologize. I don't have all the answers. I'm not saying I do." He said to Mom, "We're family. That's all I know. We'll help you any way we can."