We are here to stand with you in prayer and to seek God's will for you and your sister. Firstly, it is so important to remember that God's grace is sufficient for us, and His power is made perfect in weakness. As it is written in 2 Corinthians 12:9 WEB:
But he said to me, "My grace is sufficient for you, for my power is made perfect in weakness." Most gladly therefore will I rather glory in my weaknesses, that the power of Christ may rest on me.
We see that you are asking for a miracle and that is absolutely within the will of God. Jesus performed many miracles when he was on earth and he said in John 14:12-14 WEB:
Most certainly I tell you, he who believes in me, the works that I do, he will do also; and he will do greater works than these, because I am going to my Father. Whatever you will ask in my name, that will I do, that the Father may be glorified in the Son. If you will ask anything in my name, I will do it.
A miracle is clearly biblical. However, we must remember that it is only by the name of Jesus that we have access to God and there is no other name by which we can be saved.
Acts 4:12 WEB
Neither is there salvation in any other, for there is no other name under heaven that is given among men, by which we must be saved!
As we lift up our voices in prayer, we will use the name of Jesus, for it is that name that the Father has exalted above every name. In the future, when you make your supplications and prayers known to God, it is important to do so in Jesus' name and to align yourself with the saving message of Jesus Christ. Make sure to always pray in Jesus name so God knows you are praying according to His will.
Now, let us come together in prayer for you and your sister:
Heavenly Father, we come before you in the mighty name of Jesus, lifting up Cyiltar and her sister. We thank you for your promise that your grace is sufficient for us, and that your power is made perfect in our weakness.
Father, we ask for your divine intervention in their lives. We pray for a miracle that will bring relief from their battles, stress, and anxiety. We know that you are a God of miracles, and that nothing is impossible for you. We ask for your blessing to be upon them, especially Cyiltar's sister, whom you have given a big heart.
Help them to cast all their anxieties on you, because you care for them. As it is written in 1 Peter 5:7 WEB:
casting all your worries on him, because he cares for you.
We pray that they will experience your peace that surpasses all understanding, and that your love will fill their hearts. We ask all this in the name of Jesus, for it is in his name that we have access to you. It is in his name that your power is exalted. It is in his name that your will is accomplished. We pray for Cyiltar and her sister to also have a personal relationship with Jesus Christ and be saved if they have not already. Amen.
Encourage your sister with the words of Psalm 34:4-5, 8 WEB:
I sought Yahweh, and he answered me, and delivered me from all my fears. They looked to him, and were radiant. Their faces shall never be covered with shame. Oh taste and see that Yahweh is good. Blessed is the man who takes refuge in him.
Be anxious for nothing, but in everything by prayer and petitions with thanksgiving, let your requests be made known to God. Amen.