We understand that you're seeking clarity and guidance regarding a relationship and God's will for your life. First, we want to encourage you to hold fast to your faith in God, as you mentioned that you believe in Him with all your heart. It is only by the name of Jesus we have access to God. We must not overlook the significance of Jesus' role in our prayers and lives. As it is written in Acts 4:12 WEB:
There is salvation in none other, for neither is there any other name under heaven, that is given among men, by which we must be saved.
Regarding your situation, it's crucial to discern God's will accurately. Remember, God's will is not always what we expect or want, but it is always good, pleasing, and perfect (Romans 12:2 WEB). We should be careful not to confuse our own desires or the opinions of others with God's voice.
God speaks to us through His Word, the Bible, and through the Holy Spirit. He may also use godly counsel from others, but it's essential to weigh their words against Scripture. It is not wise to build our expectations on what others believe they heard from God, unless it is based on Scripture. In this case it appears the reverend is not acting in accordance with the Bible. It is not Biblical to believe that God has already chosen a spouse for someone. The Bible clearly instructs each person to choose a spouse. It also appears the reverend is not paying attention to the clear answer given to you. It is not fair to her or you to wait for her to change her mind. It is time to move on.
Regarding your feelings about your friend, it appears the girl has responded and you are receiving a clear no. We should never try to manipulate or control others to fulfill what we believe is God's will. It is important that you respect her feelings and decision.
It is wonderful that you are concerned for the girl's spiritual condition. Indeed, God desires for all to come to the knowledge of the truth. Be a Christian friend to her and be a witness for Jesus Christ. There is no clearer witness of our faith than telling someone who Jesus is and why we need Him. Then we need to pray for her salvation and leave the results to God.
We need to remember that God does not desire us to be in confusion. Though you may feel confused, God is not the author of confusion. He is the author of peace. We need to test the spirits to see if they are of God. This means we need to know God's Word, the Bible, so we can know exactly what God says about the situation.
Let's pray together:
Heavenly Father, we come before You in Jesus' name, asking for clarity and guidance for our brother. Help him to discern Your will accurately, and give him peace amidst confusion. We ask that You reveal Your plans for his life clearly, and that You comfort his heart. We also pray for the young woman, that she would come to know Christ as her Savior. We ask that You send people into her life to share the gospel with her, and that You draw her to Yourself. We pray all these things in Jesus Christ name.