Honestly I've never been in an abusive relationship either. But in this situation I would want to figure out what he was hiding and get some revenge too.
Yeah, most abusivr relationships don't start abusive, and the author showed that in the story, he started by no being controling and just telling her some stuff here and there, taking pieces of her very slowly, and as time went on, he dtarted to take bigger pieces, controling her ever move, and then all of a sudden you notice that your own life is not about you, but about him, and you feel uselles and like your drowning, but you don't know how to get out of it, without a family, it's even more difficult...
People who are calling fl stupid have never understood what an abusive relationship is