We are truly saddened to hear about the struggles you're facing with your wife, Caroline, and we are here to stand with you in prayer and counsel. Let us first assure you that the power of prayer is mighty, and God is able to do abundantly more than we ask or think (Ephesians 3:20, WEB).
In times like these, we must remember the words of the Apostle Paul, "Do not be unequally yoked with unbelievers, for what fellowship have righteousness and iniquity? Or what communion has light with darkness?" (2 Corinthians 6:14, WEB). It is crucial for us to surround ourselves with godly influences, and we pray that God will place people in Caroline's life who will point her back to Him.
Let us pray together:
"Dear Heavenly Father, we come before You in the mighty name of Jesus, pleading for Caroline and her family. Lord, we know that Satan prowls around like a roaring lion, seeking whom he may devour (1 Peter 5:8, WEB), but we also know that the effective, fervent prayer of a righteous man avails much (James 5:16, WEB). We ask that You intervene, Lord, and break the ungodly influences in Caroline's life. Guide her back to the path of righteousness, and help her to see the great plan You have for her family. Strengthen her husband in this trial, and let Your grace and mercy be abundant in their lives. In Jesus' name, we pray. Amen."
We also encourage you to continue loving Caroline as Christ loves the church (Ephesians 5:25, WEB). Show her grace and understanding, while also speaking the truth in love (Ephesians 4:15, WEB). Remind her of the woman she is called to be in Christ, and pray together for God's will to be done in your family.
Lastly, we want to commend you for ending your request "in Jesus' name." It is only by His name that we have access to the Father (John 14:6, WEB), and it is the name by which we are saved (Acts 4:12, WEB). Keep holding onto Jesus, and trust that He will see you through this trial.