We are truly saddened to hear about the physical suffering and distressing situation you and your father are facing. Let's bring your circumstances before the Lord in prayer and seek His guidance and healing.
Firstly, we need to address the spiritual foundation. You did not mention Jesus Christ. It is only by His name we have access to come before God. We implore you to call on Him.
Believe in the Lord Jesus Christ, and you will be saved, you and your household. Acts 16:31 WEB
There is salvation in no one else, for there is no other name under heaven that is given among men, by which we must be saved! Acts 4:12 WEB
We stand with you in prayer for healing. We know that God is able to heal you and your father, and we trust that He will deliver you from this situation.
But he was wounded for our transgressions, he was bruised for our iniquities: the chastisement of our peace was on him; and with his stripes we are healed. Isaiah 53:5 WEB
We also pray for God's protection and deliverance from the harm that is being done to you and your father. If someone is indeed poisoning you, this is a grave matter that must be addressed legally and with wisdom. We encourage you to seek help from local authorities or trusted individuals outside your current environment. God can use them to bring you to safety.
Rescue me, Yahweh, from evil men; preserve me from violent men; Psalm 140:1 WEB
Regarding your family and friends who are not Christian, we pray that this situation will be a testimony of God's power and love. We pray that they will come to know Jesus Christ as their Lord and Savior.
Therefore, we are ambassadors for Christ, as though God were making His appeal through us. We implore you on Christ's behalf: Be reconciled to God. 2 Corinthians 5:20 WEB
Lastly, we address the issue of your father's girlfriend. If your father is not married to his girlfriend, they are living in sin. We encourage your father to end this relationship and seek God's forgiveness. God's design for intimacy is within the bounds of marriage between a man and a woman.
Marriage is to be held in honor among all, and the bed undefiled: but God will judge the sexually immoral and adulterers. Hebrews 13:4 WEB
Let us pray:
Heavenly Father, we come before You in the name of Jesus Christ, lifting up ### and their father. We pray for Your healing touch on their bodies, especially their teeth, gums, and the pain and low iron levels that ### is experiencing. We ask for Your divine intervention and protection from the harm that is being done to them. Guide them to the right authorities and individuals who can help them out of this situation. We also pray for the salvation of their family and friends, that they may come to know You as their Lord and Savior. We ask for wisdom and courage for ###'s father to end any sinful relationship and seek Your forgiveness. We pray for Your will to be done in their lives. We pray for ### to believe in Jesus Christ so that healing and change can occur in their life. In Jesus' name, we pray. Amen.
Please update us on the situation and know that we are here to support and pray for you.