We are glad to join you in prayer and offer biblical guidance for this situation. Firstly let's pray for her for wisdom and leading a godly life. However we are concerned that she is not your spouse but your girlfriend.
The Bible teaches us that wisdom comes from God and that He freely gives us wisdom if we ask Him for it. James 1:5 (WEB) says But if any of you lacks wisdom, let him ask of the giving God, who gives to all liberally and without reproach, and it will be given to him. We pray for her and you that God will give you the wisdom and knowledge to make decisions that align with His will.
Regarding leading a godly life, we are instructed in Micah 6:8 "He has shown you, O man, what is good. What does Yahweh require of you, but to act justly, to love mercy, and to walk humbly with your God?" Acting justly, loving mercy, and walking humbly with God are key aspects of a godly life. We pray that she will strive to live according to these principles, and that God will give her the strength and guidance to do so.
We also pray for the children, that they may be taught God's ways and grow in the knowledge of Him. Proverbs 22:6 (WEB) says Train up a child in the way he should go, and when he is old he will not depart from it. We ask God to give her the wisdom and patience to raise her children in a godly manner.
However, we must address that you referred to her as your girlfriend. We believe that such relationships should be in the context of a betrothal, a period where two people prepare for marriage. The Bible teaches us to avoid any semblance of sexual immorality, as stated in Ephesians 5:3 (WEB): But sexual immorality, and all uncleanness, or covetousness, let it not even be mentioned among you, as becomes saints.
Moreover, we noticed that Jesus' name was not mentioned in your request. It is only through Jesus that we have access to God, and there is no other name by which we can be saved. Acts 4:12 (WEB) says There is salvation in none other, for neither is there any other name under heaven, that is given among men, through which we must be saved!
We encourage both of you to consider the sanctity of marriage and God's plan for relationships. We pray that both of you will seek God's will for your lives and that He will guide you according to His purpose. We pray that if it is God's will, He will lead you both to a godly marriage that honors Him.
Let us pray:
Dear Heavenly Father,
We come before You today to lift up this sister to You. We ask that You grant her the wisdom and knowledge needed to make decisions that align with Your will. We pray that You will guide her in leading a godly life, acting justly, loving mercy, and walking humbly with You.
Lord, we also pray for her children. We ask that You give her the wisdom and patience to raise them in Your ways. May they grow in the knowledge of You and walk in Your paths.
Lord, we also pray for her relationship with this brother. We ask that You guide them both according to Your will and that You will help them to honor You in their relationship. We pray that if it is Your will, You will lead them to a godly marriage.
Finally, Lord, we pray that both of them will come to know Jesus Christ as their Lord and Savior if that has not happened. We pray that they will understand that it is only through Jesus that they can come to You and that there is no other name by which they can be saved. We pray that they will truly believe in their hearts that Jesus Christ is Lord and that You raised him from the dead. Lord we pray that they will confess that Jesus is Lord and be saved.
In Jesus' name, we pray. Amen.
We encourage both of you to study God's Word and seek His will for your lives. May God bless you both and guide you according to His purpose.