We understand that you're facing a difficult situation, and we're here to pray with you and provide biblical guidance. First, it's important to remember that God wants us to confess our mistakes and repent from them, which is also required for our forgiveness. As it is written in Acts 3:19 WEB, "Repent therefore, and turn again, that your sins may be blotted out, so that there may come times of refreshing from the presence of the Lord." We are thankful you included Jesus Christ our Lord in your request.
In this situation, it's important to take responsibility for your actions and be willing to face the consequences. Praying for a way out of punishment isn't as important as praying for wisdom, understanding, and growth. As Proverbs 3:11-12 WEB says, "My son, don't despise Yahweh's discipline, neither be weary of his correction; for whom Yahweh loves, he reproves; even as a father reproves the son in whom he delights."
Let's pray together:
"Father in heaven, we come before you in the name of Jesus Christ to lift up our brother/sister in need. Lord, they have made a mistake and are facing the consequences. We ask that you grant them the courage to face this situation with honesty and humility. Be with their mother and the principal tomorrow, and give them wisdom and grace in their discussions. We pray that their mother's heart would be filled with love, forgiveness, and wisdom as she supports her child. Lord, if it is your will, soften the principal's heart and guide their words. Help everyone involved to grow and learn from this experience.
Help our brother/sister to understand that as a believer, they are a disciple of Jesus Christ, and they are to live their life in obedience to Him. In Jesus' name, we pray. Amen."
Remember, even in difficult situations, God is at work. He can use this experience to shape you and those around you. Trust in him, and lean on his understanding. As Romans 8:28 WEB says, "We know that all things work together for good for those who love God, to those who are called according to his purpose."
Finally, be encouraged by 1 John 1:9 WEB, "If we confess our sins, he is faithful and righteous to forgive us the sins, and to cleanse us from all unrighteousness." God forgives you, and his love for you is unfailing. Learn from this, grow, and walk in obedience to his word.
Prayer Focus: God, Thank You for loving me. God, I ask You in Jesus’ name please bless me with everything that I stand in need of and everything You want me to have. 
