We understand that you're facing a challenging situation with your boyfriend's stepdaughter living in your home, and we're here to pray and provide biblical guidance for you.
Firstly, we need to address that the request is talking about a boyfriend and not a spouse. This may be fornication in God's eyes if living together and having sexual relations Lynot married. If not living together but having sexual relations this is also fornication. The Bible tells us to flee from sexual immorality and that fornicators will not inherit the kingdom of God. 1 Corinthians 6:18-20 WEB Flee sexual immorality. Every sin that a man does is outside the body, but he who commits sexual immorality sins against his own body. Or don’t you know that your body is a temple of the Holy Spirit which is in you, which you have from God? You are not your own, for you were bought with a price. Therefore glorify God in your body and in your spirit, which are God’s. We encourage you to consider and pray about your relationship. The goal of a boyfriend relationship should be marriage. Both individuals should be looking for a spouse, because being a Christian requires romantic relationships to be appropriate, and a Christian should only be marrying a Christian. 2 Corinthians 6:14 WEB Don’t be unequally yoked with unbelievers, for what fellowship have righteousness and iniquity? Or what fellowship has light with darkness?
Your request does not mention Jesus Chirist, or an abbreviation. You mentioned the word 'lord' not 'Lord'. It should be 'Lord God' instead of 'Lord'. It can be appropriate to mention the Holy Spirit but it should be uppercased as 'Holy Spirit' in future prayer requests. We want to mention here it is only possible to go to come before the Lord God by the name of Jesus Christ. IT is only the name of Jesus Chris that we can be saved. Acts 4:12 WEB There is salvation in none other, for neither is there any other name under heaven, that is given among men, by which we must be saved! Anonymous, we assume by you writing a prayer request you want all to know you are a Christian or are asking as a Christian. Speak up about Christ and him crucified!
Now concerning your post about the step-daughter and an unclean spirit or heavy devil spirit. The Bible tells us that our battle is not against flesh and blood, but against the spiritual forces of evil (Ephesians 6:12 WEB). We encourage you that "He that is in you is greater than he that is in the world" 1 John 4:4 WEB. It appears obvious that there is a lot of spiritual warfare occurring in your home. We encourage you to first have a right relationship with Christainty and to be saved. Regradless of having the step=daughter absent from or in the house Satan you must resist the devil. Jesus gave the believers authority in Luke 10:19-20 WEB. Behold, I give you authority to tread on serpents and scorpions, and over all the power of the enemy. Nothing will in any way hurt you. 20. Nevertheless, don’t rejoice in this, that the spirits are subject to you, but rejoice that your names are written in heaven.”
.We pray together In Jesus Name. And so Lord God, we come before You in the mighty name of Jesus Christ, seeking Your divine intervention. We plead the blood of Jesus over this home and Your beloved child who is seeking help. Father we command every evil spirit that may be influencing this situation to leave in Jesus Name. We pray Lord that the Holy Spirit will guide the boyfriend, step-daughter; and Anonymous. We ask for God's will be done in everyone's lives, Lord we ask the Holy Spirit will guide these individuals to all to come to the knowledge of Jesus salvation, in Jesus name.