David, I don’t know if this is going to help. I know when we are in the middle of this kind of oppression or battle; other people’s experiences seem empty and inapplicable. But here is my 2 cents…

I have several family members who are on the same path as your daughter, sex, drugs, sin and deep pain. What I have noticed is that at some point in their life, they have opened themselves up to Satan. It could have been something seemingly simple or something as deep as an abortion or sexual trauma ect. Then they start doing drugs. Drugs have a way of opening someone up in the spirit realm, as if you give evil free reign in one’s life. Once this happens, I don’t know if they become possessed or just oppressed, but either way they become deeply entangled in the spirits that come to steal, kill, and destroy.

I hear you say, “you don’t know how much longer you can hang on, speaking promises that do not happen (paraphrased). ” I have witnessed parent’s hold on to their adult children, because they are PETRIFIED to let them go (and I completely understand). Holding on so tightly allows those same spirits that torment her, to torment you. I could not imagine the pain that this brings you. But when one holds on to them with deep fear, begging and pleading with God to deliver them, we are saying to God that we care about our children more than Him. We are sooooooo afraid that God is not really in control and that he might not save and deliver them.

This is only my humble suggestion, but possibly, the spirits that oppress your daughter have also been allowed to torment you. Sometimes our fear enables this person to continue living in sin. Sometimes letting them go allows them to hit bottom and gives God the chance he needs to change their hearts. When our love and fear over our children, becomes so intense, that we question the very character and love of God, we may be enabling their sin to continue. As well, we are now living in sin. It is so subtle, but our love for God, is replaced with our love and fear for our children.

God loves your daughter more than you. I know it sounds cliché’, but think of this. When God sent Jesus, and Jesus died, God was actually separated from the ONLY person that knew and fully understood Him. Could you imagine, having only one person in the whole universe that knew what it meant to be GOD. Jesus was the one and only person that could know and understand God’s majesty and know the depths of His love and pain. God risked everything, a very part of Himself. What if Jesus had failed? What if the one person that God could identify with, did not succeed and God lost him? He literally sacrificed EVERYTHING. He truly knows what it means to be separated from his child. We watch our children fall, but not into the depths of hell (as Jesus did). God has first hand parental experience with what you are going through. God watched His sinless Son, descend into hell, where he did not belong. God did not say we would not have tribulation in this world, in fact he stated that we will have tribulations (lots of them), but that we need not fear because He has overcome this world.

In my humble opinion, you may have to let her go and really let God do His will.  His will is perfect and it does not involve Brittany abusing you and your wife. She (Brittany) cannot be abusive towards you and your wife unless you are letting her. By holding on and letting her abuse you, you are just condoning the very sin you despise. You can’t live in fear and be trusting God at the same time, it just isn’t possible. God’s answers don’t look like our answers. He knows your pleading cause, he knows your love for your daughter, and he knows you are tired. But you need to REST. When you truly trust, REST will come. The “work” you are doing is in your ‘own strength’ when you are feeling this defeated.

There was this time I was down and hurting deeply, I was lying in my bed and I remember telling God that I was tired and I could not hold on anymore. At this point God deposited a revelation in my spirit. I realized I was trying to hold on and this ‘holding on’ was in my own strength. I realized that I was doing all the “work” and I needed to just let it be and let God do all the work. All I had to do was trust and focus of his Word and the work was all Him. I am not saying it’s easy. It is all a process. One day you are going to look back on all this pain and you are going to see why it all worked out this way. You will one day understand, but right now you need to cling to His promises and just never let go. Live and breath his word like it is your very lifeline, because it is. But do not live in fear of where your daughter is and what she is doing. You have no control over such things.

This is just my 2 cents, I will hold you up in prayer and God does answer prayer. Just rest and wait in HIM.