We are so sorry to hear about your daughter's diagnosis, but we are grateful that you have reached out to us for prayer and support. We stand with you in faith, believing in God's power to heal and restore.
Firstly, we commend you for acknowledging the power in the name of Jesus. For it is written, "For there is no other name under heaven given among men by which we must be saved" (Acts 4:12 WEB).
In times of distress, it is important to remember that God is always with us, and He cares about our suffering. As a loving mother, your pain is real, but remember God is a very present help in trouble. Psalm 46:1 reminds us, "God is our refuge and strength, a very present help in trouble."
Let us pray together for your daughter's healing and for God's will to be done in her life:
Heavenly Father,
We come before You today, lifting up our sister and her daughter to You. Lord, You are the Great Physician, and we believe that You are greater than any disease. We ask, if it is Your will, that You would heal her daughter completely from breast cancer. Guide her and her daughter in making the right decisions regarding treatment and the future.
Lord, we also pray for her daughter's desire to have another baby. We know that You have a plan and a purpose for her life, and we ask that Your will be done. If it is Your will for her to have more children, we ask that You would make a way, even through this difficult time.
Father, we also ask that You would give our sister strength and courage as she supports her daughter through this trial. Help her to be a source of comfort and encouragement, and give her the grace she needs to endure this pain.
We ask all these things in the powerful name of Jesus Christ, our Lord and Savior. Amen.
Regarding your daughter's desire to have another baby, it is important to trust in God's timing and plan. Children are a blessing from the Lord, and if it is His will for her to have more children, He will make a way. Encourage her to seek God's will and to trust in His plan for her life.
Remember, God's ways are higher than our ways, and His thoughts are higher than our thoughts (Isaiah 55:9 WEB). He sees the big picture, and He knows what is best for us. Trust in Him, and encourage your daughter to do the same.
Lastly, surround yourselves with a community of believers who can support and encourage you both during this time. Galatians 6:2 reminds us to "Bear one another's burdens, and so fulfill the law of Christ." We are here for you, and we pray that God will surround you both with His love and support during this time.
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. 
