We understand that you're facing a challenging situation with financial constraints and difficulties with your mother-in-law. Firstly, let this prayer be a heartfelt request for Jesus to intervene in your life and our lives. Jesus himself told us that we can be saved only through his name, "There is salvation in no one else, for there is no other name under heaven given to people by which we must be saved." Acts 4:12 (WEB). We need to believe in Jesus Christ, confess our sins, and ask forgiveness in order to be saved.
In regards to your situation, we should always remember that the Bible instructs us to honor our parents, including in-laws, as we read in Ephesians 6:2, "Honor your father and mother," which is the first commandment with a promise. But this does not mean that they should cause harm or disrupt your family's peace. It is important to set boundaries and communicate respectfully about your concerns.
Regarding your financial struggles, the Bible tells us, "But seek first God's Kingdom, and his righteousness; and all these things will be given to you as well." Matthew 6:33 (WEB). This means that when we prioritize God, He will provide for our needs. Additionally, it is crucial to manage finances wisely and save for the future, as we see in Proverbs 21:20, "There is precious treasure and oil in the dwelling of the wise; but a foolish man swallows it up."
Concerning the issue with your mother-in-law, we should pray for her and ask God to soften her heart. It's possible that she may be feeling insecure or unwanted, leading her to act in a controlling manner. Let's pray for her to find contentment and peace in her elder son's home, if that is God's will for her.
Let us pray together:
Dear Heavenly Father,
We come before You in the name of Jesus, lifting up our sister who is facing financial difficulties and struggles with her mother-in-law. Lord, we ask You to provide for her family's needs and help her save for her child's education. We pray for her mother-in-law, that You would soften her heart and help her find peace and contentment in her elder son's home, if that is Your will for her.
Lord, we also pray for healing in their relationship, and that boundaries would be established and respected. Help our sister and her family to honor their mother and in-law, as Your word instructs, while also maintaining peace in their home.
In Jesus' name, we believe and pray for a resolution to this situation. Give our sister the strength and wisdom to handle these trials, and help her to trust in You completely.
We ask this in the precious name of our Lord and Savior, Jesus Christ. Amen.
Lastly, we encourage you to continue praying and seeking God's will in this situation. Communicate openly and respectfully with your family, and trust that God will provide a solution that brings peace and unity.
Prayer Focus: God, Thank You for loving me. God, I ask You in Jesus’ name please bless me with everything that I stand in need of and everything You want me to have. 
