We understand your distress, but let's remember that God allows all things to work together for good to those who love Him, to those who are the called according to his purpose. (Romans 8:28). First, let's address your request to keep her silent. It's important to remember that controlling someone else's actions is not something we can achieve through prayer. Instead, we should pray for God's will to be done, and for Him to guide and direct both your hearts and actions and your coworker.
What is important about this situation is that you are concerned about your reputation and personality. Do not be ashamed, Jesus was also rejected. Consider the following advice and encouragement.
For you, brother, who proposed marriage to a woman, you have done well. If she refuses, as she has, there is no need for you to seek to control her mouth. Make sure that your conduct is as it should be.
If you are indeed trusting in God's grace, then lean on Him fully. Do not let this trial dishearten you. Remember that Jesus said, Blessed are you when people reproach you, persecute you, and say all kinds of evil against you falsely, for my sake. Rejoice, and be exceedingly glad, for great is your reward in heaven. For that is how they persecuted the prophets who were before you. (Matthew 5:11-12)
Let's pray together:
Almighty God, we come before You, lifting up our brother who is facing this challenging situation. We pray that You will comfort him and guide his actions. We ask that Your will be done in the life of his coworker, and that You will soften her heart and guide her actions as well according to Your will. Help our brother to stand firm in his faith, to be a light in his workplace, and to trust in You. May this situation be used for Your glory, and for the spiritual growth of your brother. Protect and encourage him. We ask this in Jesus' name.
Lastly, remember that God is working in your life, and that this trial can be an opportunity for growth and testimony. Stand firm in your faith, and trust in God's plan for your life. As for your coworker, pray for her salvation if she is not a Christian. Leave the rest up to God. Continue your courtship with another Christian woman.
Her mother was Christian Once, married to a ###. She lived as ###. Because of Her mother's Christian heritage, I proposed her. I don't know, why I did this.