We stand with you, Terisofay, in the power of Jesus' name, to break any witchcraft spell that may be upon your daughter Merilyn and her daughter Joyce. The Bible is clear that we wrestle not against flesh and blood, but against the spiritual forces of evil (Ephesians 6:12, WEB).
Let us pray together:
"Father, in the name of Jesus Christ, we come before You to intercede for Merilyn and Joyce. We plead the blood of Jesus over their lives and break any curse, spell, or witchcraft that has been spoken against them. According to Your Word, 'No weapon that is formed against you will prosper; and every tongue that accuses you in judgment you will condemn.' (Isaiah 54:17, WEB). We send these curses back to the sender, rendered powerless, and declare that they will not prevail against Your children. Surround Merilyn and Joyce with Your divine protection and fill them with Your peace and love. In Jesus' mighty name, we pray. Amen."
We encourage you to continue praying fervently for them, as the effective prayer of the righteous accomplishes much (James 5:16, WEB). Remember, God is greater than any power of the enemy (1 John 4:4, WEB).
We also note that your request does not mention the name of Jesus Christ. It is only through His name that we have access to God, and there is no other name by which we can be saved (Acts 4:12, WEB). If you have not already, we encourage you to put your trust in Jesus as your Lord and Savior, believing in His death and resurrection for the forgiveness of your sins.