Being held against ones will.

That would actully be illeagal is he is drugging her and if she really feels that, she should report that. As of the day she turned 18, she's an adult and has her own free will - which is easily said but hard to always realize, especially if she is living at home. Being held against her will, even by her parents is not something the law looks too kindly upon.

Thanks for serving by the way. What was MOS?

That isn't right, and she could probably sue him or something like that over this. Regardless, I'd get her out of there if you can.

I would say that is abuse. even if she was a monor, drugging your child at night so she can't leave is still illegal. at the same time, if she does get out of the house she wont be able to go back. her parents arent legally obligated to let her live there since she's over 18. also, if her father owns her car, he doesnt have to let her keep that either. if she does take it, he could just as easily report it stolen. my advice to you is for the 2 of you to work out a plan for her "escape", wrather than just jumping in to it. then once she gets out, worry about how you're going to sue him or whatever for the abuse. right now you need to work together to find a safe way to get her out of the situation she's in.

If the father takes her keys she can still walk out, get a cab, call a friend etc. However, she probably won't be allowed to return to live in her father's house if he feels so strongly about her leaving. If he's drugging her at night obviously that is against the law and if nobody wants to get the police involved and you're ready to support her full time then she should move in with you now. However, keep in mind that she obviously loves her father and by leaving she will be cutting ties with him to be with you which could cause major problems of resentment and wonder later on down the line.

I thing the logical thing would be to go to a family councilor now to resolve any issue and hopefully build some sort or relationship with you and her father, even if it is just cordial. Get the entire family involved in the counseling if at all possible, it's never a bad idea to just talk and more