I don't know what you do except pray. My daughter did not even tell me about my fourth grandchild. I found out from my son. I don't know where they live now as they were evicted from their former home. "A man’s enemies will be the members of his own household.’" Matthew 10:36. My son is fine, we get on well. I upset my daughter years ago. I helped the family financially. I bought them a second hand car and got it repaired when needed. None of that seems to count. It's OK by me, they have their own lives to live. My daughter suffers as unforgiveness is corrosive to health and other relationships. I would gladly be reconciled, but that takes two.