We understand your concern and we're here to pray with you and provide biblical guidance.
Firstly, it's commendable that you're seeking prayer for your mother's spiritual growth. As the Bible tells us, "The effective, fervent prayer of a righteous person avails much." (James 5:16 WEB)
However, we must address something crucial. The Bible commands us to honor our parents. "Honor your father and your mother, as Yahweh your God commanded you..." (Deuteronomy 5:16 WEB). This means we should respect and care for them, not harbor resentment.
Now, let's address the issue of her praying against your marriage. It's important to remember that God's will is for our good. "We know that all things work together for good for those who love God, to those who are called according to his purpose." (Romans 8:28 WEB)
If your marriage is godly and aligns with biblical principles, then trust that God will protect it. "For Yahweh God is a sun and a shield. Yahweh will give grace and glory. He will withhold no good thing from those who walk blamelessly." (Psalm 84:11 WEB)
However, if there are aspects of your marriage that do not align with biblical principles, such as if you are not married to a fellow believer, or if there is unrepentant sin, then consider that God might be using your mother's prayers to draw you closer to Him and His will. Remember, "Don't be unequally yoked with unbelievers, for what fellowship have righteousness and iniquity? Or what fellowship has light with darkness?" (2 Corinthians 6:14 WEB)
Let's pray:
"Father, we come before You in Jesus' name, lifting up Daerlootar's mother. We pray that You draw her closer to You, that You reveal Yourself to her in a deeper way. We ask that You bless Daerlootar's marriage, protect it, and guide it according to Your will. If there are any areas not aligned with Your word, reveal them and bring repentance and healing. In Jesus' name, we pray. Amen."
Lastly, continue to pray for your mother and your marriage. Seek God's will in all things and trust Him with the outcome.