We understand your concern and anxiety, but we must correct that prayer is made to God the Father in the name of Jesus Christ His Son. First, let's pray together for your daughter's safety and your peace of mind:
Father God, in the name of Jesus Christ, we come before you, lifting up our sister who is worried about her daughter. God, you are the protector, the all-seeing, the all-knowing Father. We pray that you extend your hand of protection over her daughter right now, wherever she may be. We pray that your Holy Spirit will guide her and bring her safely home to her mother.
We also pray for our sister, that you will fill her with your peace that surpasses all understanding. We know that you care for us, and that includes our children. Cast out all fear and anxiety, and replace it with your peace and trust in you.
Finally Lord, we pray if there are any blocks in their relationship, that these may be removed. Help them both to love and respect each other, and to live in a way that honors you. Guide them with your word, and let them walk not in their own strength but in the power of your Holy Spirit.
In Jesus Christ's name, we pray. Amen.
Please take comfort in the following scripture: Trust in Yahweh with all your heart, and don't lean on your own understanding. In all your ways acknowledge him, and he will make your paths straight, according to Proverbs 3:5-6 WEB.
Also, remember that God cares for you and your daughter. Look to him in this time of need, and trust that he is working everything out for your good, because you love him and you're called according to his purpose.
The next time you pray, remember to pray in Jesus' name. As Jesus said, Most certainly, I tell you, whatever you may ask the Father in my name, he will give it to you, in John 16:23 WEB. It is only by the name of Jesus that we have access to God. Also, there is no other name by which we can be saved. As 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, through which we must be saved.