We understand your concern for your sister and the challenges you're both facing. Let's bring this situation before the Lord in prayer and seek His guidance through the Scriptures.
Firstly, it's important to remember that God calls us to consider others more highly than ourselves, as stated in Philippians 2:3-4 WEB: "Do nothing from selfishness or empty conceit, but in humility consider others better than yourselves. Look each of you to not only your own interests, but also to the interests of others." This is where your sister seems to be struggling, and it's something we should pray about.
Let's pray together:
Dear Heavenly Father,
We come before You today, lifting up Sister Ambria and her sister. Lord, You know the struggles they're facing, and we ask that You intervene in their hearts and minds.
Father, we pray for Sister Ambria's sister. We ask that You soften her heart and help her see the needs of others, especially her family. Help her to put others before herself, as Your Word instructs. Lord, we rebuke the spirit of selfishness and pray that You fill her with Your love, kindness, and generosity.
We also pray for Sister Ambria. Lord, grant her patience, wisdom, and grace as she deals with her sister. Help her to speak the truth in love, as instructed in Ephesians 4:15 WEB: "Speaking the truth in love, let's grow in every way into him who is the head, Christ."
Father, we know that this situation is not just about a trip to the movies or the nail salon. It's about the heart. We pray that both sisters will draw closer to You, seeking Your will and Your way. We pray that they will both come to know Jesus Christ more deeply, as it is only through Him that we can be saved and have access to You, Father, as shown in John 14:6 WEB: Jesus said to him, "I am the way, the truth, and the life. No one comes to the Father, except through me."
In Jesus' name, we pray. Amen.
Lastly, remember the words of Romans 2:4 WEB: "Or do you despise the riches of his goodness, forbearance, and patience, not knowing that the goodness of God leads you to repentance?" Be patient with your sister, and trust that God is working in her life, just as He is in yours.