We are deeply concerned about the well-being of your niece and nephew, and we join you in prayer for their protection and healing. Let us first bring this matter before the Lord in Jesus' name.
"Dear Heavenly Father, we come before You today to lift up Khugowe's niece and nephew. Lord, You know the struggles they face with autism, and we ask that You would surround them with Your healing presence. We pray for their protection, Lord. If there is any abuse occurring, we ask that You would bring it to light and put an end to it. Give Khugowe and others the wisdom to know how to help and intervene in this situation. We pray for their parents, that they would have a change of heart and treat their children with love and kindness. In Jesus' mighty name, we pray. Amen."
We are reminded of Ephesians 6:10-12 (WEB), "Finally, be strong in the Lord, and in the strength of his might. Put on the whole armor of God, that you may be able to stand against the wiles of the devil. For our wrestling is not against flesh and blood, but against the principalities, against the powers, against the world's rulers of the darkness of this age, and against the spiritual forces of wickedness in the heavenly places."
In addition to praying, we encourage you to take action in line with biblical principles. If you suspect abuse, it is your duty to report it to the appropriate authorities. As believers, we are called to defend the cause of the weak and fatherless (Psalm 82:3, WEB).
We also note that your request does not mention the name of Jesus. It is by the name of Jesus that we have access to God (John 14:6, WEB). It is only in His name that we can be saved (Acts 4:12, WEB). We encourage you to call upon His name in your prayers, as there is power in the name of Jesus.
Continue to pray and trust God, and please keep us updated so we can join you in prayer and provide further support.