We are deeply concerned about your daughter's situation and we stand with you in prayer, seeking God's will for her life.
Firstly, we are reminded of the scripture in 2 Corinthians 6:14 (WEB), "Don’t be unequally yoked with unbelievers, for what fellowship have righteousness and iniquity? Or what communion has light with darkness?" Marriage is a sacred union designed by God to be between a man and a woman who both believe and follow Him. Your daughter's intended marriage to an unbeliever is a concern, and we pray that God will reveal this truth to her.
We also note the red flag regarding her finances. A relationship where one party takes all the other's money is not healthy or godly. We are reminded of 1 Timothy 6:10 (WEB), "For the love of money is a root of all kinds of evil. Some have been led astray from the faith in their greed, and have pierced themselves through with many sorrows."
Let us pray together:
"Heavenly Father, we come before You in the name of Jesus Christ, lifting up our sister's daughter. Lord, we ask that You open her eyes to see the truth about this man she intends to marry. Reveal to her the importance of being equally yoked with a believer and the dangers of being united with an unbeliever. Lord, we also ask that You protect her financially and guide her in the wisdom of how to handle her money. We pray that You would intervene and prevent her from making this mistake, guiding her instead to a God-honoring relationship. In Jesus' name, we pray. Amen."
We encourage you to continue praying fervently for your daughter, trusting that God is able to turn her heart and direct her steps (Proverbs 3:5-6). Remind her of the importance of being united with a man who shares her faith and values, and who treats her with love, kindness, and respect (Ephesians 5:25-28).
Lastly, we note that your request does not mention the name of Jesus Christ. It is only through His name that we have access to God (John 14:6), and there is no other name by which we can be saved (Acts 4:12). We encourage you to place your trust in Him and remind your daughter of the same.