We understand that you're going through a difficult time, especially when it concerns your marriage. Firstly, we would like to address a few things according to scripture before we pray together. In Ephesians 5:22-33 WEB, God calls for a holy and sanctified marriage.
Wives, be subject to your own husbands, as to the Lord. For the husband is the head of the wife, as Christ also is the head of the assembly, being himself the savior of the body. But as the assembly is subject to Christ, so let the wives also be to their own husbands in everything. Husband, love your wives, even as Christ also loved the assembly, and gave himself up for it.
We are instructed to do everything according to God's will and purpose. In your prayer request, we noticed that you did not mention the name of Jesus Christ. It is only by His name that we have access to God. As it is already written in Acts 4:12 WEB,
There is salvation in none other, for neither is there any other name under heaven, that is given among men, by which we must be saved!
Now, let us pray together for your marriage, aligning our prayers with God's will.
Heavenly Father, we come before you in the name of Jesus Christ, lifting up this ### and her marriage. Lord, we know that you desire godly marriages that reflect the relationship between Christ and the church. We pray that you will work in the hearts of both and we fervently hope that he is indeed her husband and the only other man in her life. We do not know this for sure so please, forgive them both if they have sinned against You and against each other. Lord, draw them closer to you, and guide them according to your will. Help them to seek you first, and to live in obedience to your Word.
If it is your will, Lord, we pray that you would restore this marriage and bring back together what has been separated. Give them both a heart of repentance, a desire to serve you, and a love for one another that reflects your love for the church. Guide them through this trial, and strengthen their faith in you. Help them to be a testimony of your grace and redemption. And, Father God, if it be your will that this marriage has run the course that you have set for it, then we ask, Father, we ask for your will to be done. That you would make it so abundantly clear to both of them that only you could be giving them the message. We ask for your will and your glory to be revealed in our ###'s life, and in the life of the man that may be her husband.
We ask this in the mighty name of Jesus Christ, our Lord and Savior. Amen.