Dear Grandma123,
I am sorry for the problems in your daughters marriage and will pray for reconcilation. God always wants reconciliation in marriage, but sometimes it is not possible. I lost a man I loved dearly. In the end it was better for the children to be away from the fighting and he chose not to change his ways. It is best for each to turn over every stone possible if they are willing. Counseling, prayer, everything they can do and after they have tried it all and it does not succeeed only then can they walk away knowing it is justified. I am in psycology so I hope this helps and I will be praying for them. Keep the faith and I will pray tonight as I lay in bed that God can heal their hearts and wounds and I hope they can meet someone who or experience for a brief moment how excruciating divorce can be so they can keep their family together. Good luck to you.