We are truly sorry to hear about the trials you are facing, and we appreciate your gratitude and faith in God. It is wonderful to see that you acknowledge God's work in your life and the person you have become because of Him. Remember, it is only by the name of Jesus that we have access to God, and there is no other name given by which we must be saved. (Acts 4:12) Let us pray together in the name of Jesus for your situation and address the concerns you've raised.
Firstly, let us reflect on the story of Jabez. In 1Chronicles 4:9-10 (WEB), Jabez is described as more honorable than his brothers. The context reveals that God granted the requests of Jabez because He was pleased with him, and it is essential to note that he asked according to God's will and the same is to be applied in one's life.
Concerning the treatment you have received from your sister-in-law, Jesus tells us in Matthew 5:11 (WEB), Blessed are you when people reproach you, persecute you, and say all kinds of evil against you falsely, for my sake.
As the Bible states, God can use even the most difficult circumstances for our good and His glory, and He will not forsake you. IJN, we pray for the situation with your family which has resulted in you being locked out and having to sleep in your neighbor's car. Pray that the Lord may work in the heart of your sister-in-law and may He bring unity in your family according to the will of God.
Christ is close to the brokenhearted and saves those who are crushed in spirit. (Psalm 34:18) Therefore, we can ask, IJN, that you may be comforted during this time of grief after the loss of your mother. We understand and stand together, it can feel as though you are alone in this world, but if you place your trust and hope in Christ, He will never abandon you nor forsake you. (Deuteronomy 31:6 WEB)
Remember, God cares about every aspect of your life, and you should proudly acknowledge Him, as you have done in your request. Trust Him and His timing, and He may grant the desires of your heart as they align with His will.
Concerning the mention of 'deserving' this kind of treatment, let us consider what the Apostle Paul says in Romans 8:28. In this verse, we find that, in all things, God works together for good for those who love Him and are called according to His purpose. Christ suffered for us, leaving us an example that you should follow His steps. (1 Peter 2:21 WEB)
In all this, rejoice in hope. Be patient in trouble, and be faithful in prayer.