We are concerned for your daughter and we stand with you in prayer. It is important to address not only the physical aspects of her situation, but also the spiritual ones. Inappropriate fasting or not eating properly can have serious consequences, and it's crucial to seek God's guidance and wisdom in this matter.
Firstly, we acknowledge your faith in Jesus Christ as you brought your prayer to Him. It is only in the name of Jesus that we have access to the Father and it is only by His name that we are saved. For there is no other name given among men, whereby we must be saved. As the scripture says in Acts 4:12 WEB:
"There is salvation in none other, for neither is there any other name under heaven, that is given among men, by which we must be saved!"
We commend you for your trust in the Lord and we join you in praying for your daughter's healing and restoration. We pray that God will touch her body and bring her back to full health and strength. We also pray for wisdom for you and your family as you support her during this time.
However, we must also address the issue of undue influence that may have led your daughter to this point. It is important to be cautious of any relationships or influences that may not align with biblical principles. As it is written in 1 Corinthians 15:33 WEB:
"Don't be deceived! 'Evil companionships corrupt good morals.'"
We pray that God will expose and remove any negative influences in your daughter's life that may be contributing to her condition. We also pray for discernment and protection for her as she navigates her relationships and influences.
Moreover, we must consider the spiritual aspect of your daughter's behavior. Fasting is a spiritual discipline that is meant to bring us closer to God, not to harm our bodies or conform to the world's image of beauty. It is written in 1 Timothy 4:8 WEB:
"for bodily exercise is profitable for a little, but godliness is profitable for all things, having promise of the life now, and of that which is to come."
We pray that your daughter will be filled with the knowledge of God's will in all wisdom and spiritual understanding, that she may walk worthy of the Lord, to please him in all respects, bearing fruit in every good work, and increasing in the knowledge of God. (Colossians 1:9-10 WEB)
We encourage you to seek medical help for your daughter, as well as spiritual guidance. We trust that God will direct you to the right professionals who can provide the care and support that your daughter needs.
Finally, we pray that your daughter will come to know the love of Christ that surpasses knowledge, that she may be filled with all the fullness of God. (Ephesians 3:19 WEB) We pray that she will be strengthened with all power, according to the might of his glory, for all endurance and perseverance with joy. (Colossians 1:11 WEB)
We stand with you in faith, believing that God will hear our prayers and restore your daughter to full health and strength. We pray that this situation will be used for God's glory and that your daughter will be drawn closer to Him through it all.
Let us pray together:
Dear Heavenly Father,
We come before You today, lifting up our sister's daughter to You. Lord, You know the details of her situation and we trust that You are working all things together for her good and Your glory.
Father, we ask that You touch her body and bring her back to full health and strength. We pray that You will expose and remove any negative influences in her life that may be contributing to her condition. We also pray for wisdom and discernment for her and her family as they support her during this time.
Lord, we ask that You will fill her with the knowledge of Your will in all wisdom and spiritual understanding, that she may walk worthy of You, to please You in all respects, bearing fruit in every good work, and increasing in the knowledge of You.
Father, we pray that You will direct them to the right professionals who can provide the care and support that she needs. We ask that You will be with her and her family every step of the way, guiding them and giving them Your peace.
Lord, we ask that You will use this situation for Your glory and that she will be drawn closer to You through it all. In the name of our Lord and Savior, Jesus Christ, we pray. Amen.
Prayer Focus: God, Thank You. Thank You for loving me. God, I ask You in Jesus’ name bless me with everything that I stand in need of and everything You want me to have. Bless me to know You in truth, fall in love with You with all my heart, mind, soul, body, and strength and never fall out of love with You. Bless me to have an ever growing closer stronger, more intimate relationship with You. Bless me with the love, desire, strength, and the spirit of obedience to always delight myself in You, seek first Your kingdom, and Your righteousness. Help and strengthen me God to always respect and obey You. Bless me to trust You with all my heart, acknowledge You in all my ways, and lean not to my own understanding. 
