We understand your concern and see the heaviness in your heart regarding this situation with "A." Let us first align our hearts with the Word of God and pray according to His will.
Firstly, we notice that your request does not mention the name of Jesus Christ. It is essential to understand that it is 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 in the name of Jesus, for it is in His name that we find true healing and peace.
Regarding your request, we must remember that God's desire is for us to live in peace and love, even with those who may cause us distress. In Romans 12:18 (WEB), it is written, "If it is possible, as much as it is up to you, be at peace with all men." However, we also understand that sometimes, separation may be necessary for our own well-being and spiritual growth.
Let us pray together:
"Dear Heavenly Father, we come before You today in the name of Jesus Christ. We lift up 'A' to You, Lord. We pray that You would heal their mind and grant them Your peace that surpasses all understanding. We ask that Your will be done in this situation. If it is Your will, Lord, that 'A' be removed from our lives, we ask that You make that clear and help us to trust in Your decision.
However, Lord, if there is a way for reconciliation and peace, we pray that You would guide us and give us the strength and wisdom to navigate this situation. Help us to love as You love, and to find peace in this situation, whatever the outcome may be.
We also pray for ourselves, that You would fill us with Your Spirit, and help us to live in a way that is pleasing to You. Help us to forgive as You have forgiven us, and to live in love and unity with others.
In Jesus' name, we pray. Amen."
Remember, beloved, that God is faithful and will not let you be tempted beyond what you can bear (1 Corinthians 10:13, WEB). Trust in Him, and He will guide you through this situation. Keep your eyes fixed on Jesus, the author and perfecter of our faith (Hebrews 12:2, WEB).