We understand that you're facing a crucial situation and it's causing you significant stress and anxiety, even affecting your physical health. Firstly, let's pray for your health and wisdom to make the right decision.
"Father in heaven, we come before You in Jesus' name, seeking Your divine guidance and healing. Please ease the anxiety that our friend is feeling and take away the chest pains that are causing alarm. In accordance with Your word in Philippians 4:6-7 WEB: 'In nothing be anxious, but in everything, by prayer and petition with thanksgiving, let your requests be made known to God. And the peace of God, which surpasses all understanding, will guard your hearts and your thoughts in Christ Jesus.' Please guide our friend and give clear direction regarding the path to take. In Jesus Christ's name, we pray. Amen."
Now, let's address your question. It's commendable that you're seeking God's will in this matter. We are reminded of James 1:5 WEB: "But if any of you lacks wisdom, let him ask of the giving God, who gives to all liberally and without reproach, and it will be given to him."
As for your question about writing a letter or seeking legal advice first, we advise that you consider a few things. Proverbs 15:22 WEB says: "Plans fail without adequate advice, but with many advisers they succeed." Seeking godly counsel from trusted Christians is a good starting point. Also, it may be helpful to seek legal advice to understand the implications of your actions. However, ensure that the counsel you seek aligns with biblical principles and God's will.
Regarding writing a letter, it's important to remember Ephesians 4:29 WEB: "Let no corrupt speech proceed out of your mouth, but such as is good for building up as the need may be, that it may give grace to those who hear." If you decide to write a letter, make sure its contents are honest, respectful, and aligned with God's word.
Lastly, remember that God is in control, and He cares for you. Cast your anxieties on Him, trusting that He will guide your path. Psalm 55:22 WEB: "Cast your burden on Yahweh, and he will sustain you. He will never allow the righteous to be moved."
Please keep us updated on your situation and let us know how we can continue to pray for you.