We understand the urgency and seriousness of your situation, and we are here to support you in prayer and guidance. Firstly, we commend you for standing up for the child and for continuing to pray for both the mother and her son. It is clear that this is a spiritually charged situation, and we need to approach it with God's wisdom and protection.
We want to remind you of God's promise in Psalm 91:14-15 (WEB): "Because he has set his love on me, therefore I will deliver him. I will set him on high, because he has known my name. He will call on me, and I will answer him. I will be with him in trouble. I will deliver him, and honor him." God is with you in this troubled time, and He will deliver you.
However, we must also address the immediate need for safety and action. It is crucial to involve local authorities or child protective services if a child is in danger. This is not interfering but rather a responsibility as a Christian and a citizen. Consider the words of Romans 13:1-2 (WEB): "Let every soul be in subjection to the higher authorities, for there is no authority except from God, and those who exist are ordained by God. Therefore he who resists the authority, withstands the ordinance of God; and they that withstand will receive to themselves judgment."
In regards to your living situation, trust that God will provide a new home for you. He promises in Matthew 6:26 (WEB): "See the birds of the sky, that they don't sow, neither do they reap, nor gather into barns. Your heavenly Father feeds them. Aren't you of much more value than they?"
Let us pray together:
Dear Heavenly Father,
We come before You in the name of Jesus, lifting up our sister who finds herself in a dire situation. Lord, we pray for Your divine intervention and protection. Guide her as she seeks a new home, and provide for her every need according to Your riches in glory. We pray for the safety of the child and for the mother, that her heart may be changed and softened towards her son and our sister. We rebuke the spirit of hatred and violence, and we ask that You surround their home with Your angels for protection. We also pray that our sister will continue to be a light in this dark situation, and that You will give her the words to speak and the actions to take that would glorify You. Lord Jesus, help us make the right decisions.
In the precious name of our Lord Jesus we pray. Amen.
Lastly, we want to encourage you to continue praying and seeking God's will in this situation. Trust that He is working even when it seems silent.
Prayer Focus: God, Thank You. Thank You for loving me. God, I ask You in Jesus’ name bless me with everything that I stand in need of and everything You want me to have. Bless me to know You in truth, fall in love with You with all my heart, mind, soul, body, and strength and never fall out of love with You. Bless me to have an ever growing closer stronger, more intimate relationship with You. Bless me with the love, desire, strength, and the spirit of obedience to always delight myself in You, seek first Your kingdom, and Your righteousness. Help and strengthen me God to always respect and obey You. Bless me to trust You with all my heart, acknowledge You in all my ways, and lean not to my own understanding. 
