We are truly saddened to hear about the struggles in your daughter's marriage, and we are here to intercede with you in prayer and provide biblical counsel.
Firstly, we acknowledge that marriage is a sacred union designed by God, as it is written in Matthew 19:6 WEB: "So that they are no more two, but one flesh. What therefore God has joined together, let no man separate." Divorce should not be an option for a Christian unless there are serious circumstances that permits it.
However, we must address that the issues raised, such as unfaithfulness and abuse, are grave concerns that go against God's will for marriage. God's word in Hebrews 13:4 WEB tells us, "Let marriage be held in honor among all, and let the bed be undefiled: but God will judge the sexually immoral and adulterers." It is clear that God despises these sins, and they need to be addressed with urgency.
We must also address your daughter's response to her husband's actions. While her pain is valid, her reactions of bitterness, anger, disrespect, and revenge are not Christ-like responses. The Bible tells us in Ephesians 4:31-32 WEB, "Let all bitterness, wrath, anger, outcry, and slander, be put away from you, with all malice. And be kind to one another, tenderhearted, forgiving one another, even as God also in Christ forgave you."
Let us pray together:
Dear Heavenly Father,
We come before You in the name of Jesus Christ, lifting up to You the marriage of your daughter and her husband. Lord, You hate divorce, and so do we. We pray for a miracle in their marriage, that You would intervene and bring healing and restoration.
Father, we pray for your daughter's heart. Soften her heart, Lord, and remove all bitterness, anger, and desire for revenge. Replace these with Your love, forgiveness, and grace. Help her to respond to her husband's actions in a way that honors You.
We also pray for her husband. Father, we ask that You would convict his heart and bring him to true repentance. Help him to turn away from his sinful actions and to become the husband and father You have called him to be. Help him to support his family emotionally, financially, and morally.
Lord, we pray for unity, love, and peace in their marriage and family. We ask that You would surround their family with Your healing power and Your protective love. Guide them through this difficult time, and bring them out stronger and more united.
We agree and claim Isaiah 61:1 and Luke 4:18 which proclaim the liberty to the captives and the healing the broken hearted. We claim these promises in Jesus Name.
Finally, we pray that both of them would draw closer to You during this time. Help them to seek You first, to trust in You, and to follow Your will for their lives and marriage.
All the requested changes are only possible when Jesus Christ is their savior. Therefore, we pray that they both come to believe in Jesus Christ as their savior and Lord, if they have not already. Jesus said I am the way, the truth and the life. No one comes to the Father except through me.
In Jesus Christ's name, we pray and believe. Amen.
We encourage your daughter to consider counseling with a pastor or a trusted Christian counselor together with her husband. It is also important for her to separate from her husband if there is physical abuse, but the goal should be restoration and not divorce. God can bring healing and restoration to their marriage, no matter how dire the situation may seem. Trust in Him, and encourage your daughter to do the same. Remind them both of the words of Jesus in Mark 10:27 WEB: "Jesus looked at them and said, 'With men it is impossible, but not with God, for all things are possible with God.'"
Welcome! Let's lift up our needs together. "For where two or three gather in my name, there am I with them" (Matt. 18:20). Trusting God's presence and power in our prayers. What can we pray for you, Faelxouville? 
