One reference I would love to have is of an attorney or attorneys who are using the law in a thoughtful way to give as much chance as possible for a marriage to reconcile.
I know when it looked like my wife was going to get a divorce I was thinking about such things, although I never hired a divorce attorney.
I know in Ohio there is a little used provision where one party can request the judge to order marriage counseling. It is somewhat up to the judge's discretion.
I know that in California some people have been court ordered to go through "Reconciling God's Way".
One simple thing in most states is that even if a person is sued for divorce they have time, such as 30 days, to respond to the court. Just making your response filing towards the end of the filing period can slow things down.
I am sure that there are many other legal and ethical techniques that can be used to help the partner who is in a rush to get out of the marriage to think twice.
Alot of people will probably dismiss such things as a waste of time and say, "Why try?" when eventually the person will get their divorce.
My thought is that if you really believe that God hates divorce and that Jesus said "Let no man put asunder what God has joined together" and "All things are possible with God"- then why not try?