We understand your concern and desire for your daughter's happiness, but we must approach this situation with wisdom and biblical principles. Firstly, we notice that the prayer request does not mention the name of Jesus Christ, so we want to remind you that it is through Jesus that our prayers are heard by God. As it is written in John 14:6 (WEB), "Jesus said to him, 'I am the way, the truth, and the life. No one comes to the Father, except through me.'"
Now, regarding your daughter's relationship, we must emphasize that the Bible teaches us to honor our parents, but ultimate authority belongs to God. Junior's mother should not be the deciding factor in their relationship, but neither should your daughter be deeply bound to a man who is not her husband. The Bible advises us not to be unequally yoked (2 Corinthians 6:14), and while this passage is often referred to in the context of marriage, it also applies to relationships that may lead to marriage.
Let us pray:
Dear Heavenly Father, we come before You in the name of Jesus Christ to lift up this mother's concerns for her daughter. Lord, you know the depth of her love and concern. We pray that You guide both her daughter and Junior. If their relationship is in accordance with Your will, we pray that You soften Junior's mother's heart and help them overcome this challenge. But above all, Lord, we pray for Your perfect will to be done in their lives. We pray that they seek You first, as You promised that when we do, all other things shall be added unto us (Matthew 6:33).
We also pray for your daughter's emotional well-being. Lord, you are near to the brokenhearted (Psalm 34:18), and we ask that You comfort her and give her peace. Help her to trust in You with all her heart, and not to lean on her own understanding (Proverbs 3:5-6). In Jesus' name, we pray. Amen.
Lastly, we encourage you to support your daughter through this difficult time, guiding her to make decisions that honor God. Remind her that God loves her deeply and has a plan for her life (Jeremiah 29:11). Trust that He is working all things together for her good (Romans 8:28).