We understand that you are seeking prayers for Marceline, and we are here to lift her up in prayer together with you. However, we noticed that you didn't mention the name of Jesus Christ in your request. It is only through 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.'" Therefore, we will pray to God the Father in the name of Jesus Christ for Marceline.
Let us pray:
"Dear Heavenly Father, we come before You in the name of Jesus Christ to lift up Marceline in prayer. We don't know the specific details of her situation, but we know that You care for her deeply. We pray that Your will be done in her life and that You would surround her with Your love, protection, and guidance.
We pray that if Marceline does not already know You, Father, that You would reveal Yourself to her through the Holy Spirit, drawing her to faith in Jesus Christ. As it is written in Romans 10:9 (WEB), 'because, if you will confess with your mouth that Jesus is Lord, and believe in your heart that God raised him from the dead, you will be saved.'"
We encourage you to continue praying for Marceline, trusting that God hears your prayers when you pray in Jesus' name. Remember the words of James 5:16 (WEB), "Confess your offenses to one another, and pray for one another, that you may be healed. The insistent prayer of a righteous person is powerfully effective."
In Jesus' name, amen.