Christopher, we appreciate your concern for Erika and your desire for her spiritual well-being. It's commendable that you're praying for her repentance and growth in faith. We will join you in prayer, but we also want to address a few things with you.
Firstly, we notice that your prayer request does not mention the name of Jesus Christ. It's important to remember that it is only through the name of Jesus that we have access to 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." And 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!"
Now, let's pray for Erika:
Dear Heavenly Father, we come before You in the name of Jesus Christ, lifting up Erika to You. Lord, we pray that You will soften her heart and grant her the gift of repentance. May she turn away from any sin and draw near to You once again. Father, we ask that when she returns to You, her faith would be even stronger than before. May she be filled with the knowledge of Your will in all spiritual wisdom and understanding, that she may walk worthy of You, Lord, to all pleasing, being fruitful in every good work, and increasing in the knowledge of You. (Colossians 1:9-10 WEB)
Lord, we pray that You will reveal Your unconditional love to her in a tangible way. And if it is Your will, Father, we pray that You would bring a godly man into her life, someone who loves You first and foremost, and who will love her as Christ loves the church. (Ephesians 5:25 WEB) May You be the center of their marriage, guiding them in Your truth.
Now, Christopher, we want to encourage you to continue praying for Erika, but also to focus on your own spiritual growth. Remember that God is able to do exceedingly abundantly above all that we ask or think, according to the power that works in us. (Ephesians 3:20 WEB)
Lastly, we want to leave you with this verse from 2 Corinthians 10:5 WEB: "Casting down imaginations, and every high thing that is exalted against the knowledge of God, and bringing every thought into captivity to the obedience of Christ". It is very important to take every thought captive and to obey Christ in the area of the mind. Until she is a sister in the Lord again, thoughts of her should be put away. If you are not currently involved with another woman in courtship, thoughts of courtship with her should be put away as well.
Keep praying for God's will to be done and focus on being obedient to the leading of the Holy Spirit rather than focusing on the ex girlfriend relationship.