I'm writing a book that is partly just a horror story about a girl who gets stuck with a psychopath after her abusive husband gets in a coma, but is also partly about the abusive relationship itself. I want to show readers what it is like to be in a relationship like that, and why so many people who find themselves in one don't leave the person they're with despite the situation. I already have a good idea of her motivations and such, but I still feel like I'm not knowledgeable enough to really delve into the issue. I have searched for articles and documentaries about it, but I'm a terrible researcher, so all I've found have been stuff that just talks about how horrible it is, rather than the psychological reasons behind ending up in, and staying, in such a relationship. If any of you guys have any suggestions on articles or documentaries, or perhaps even better: ways in which I should go about researching it, then that would be great!