There is no one here that is in anyway a descent person. Probably the most honest character is Arman, the mobster. The main characters are all trash absolute filth with self aggrandizing morality that they only apply to others?
The sister in law is manipulative liar, a user that damages the lives of everyone one around her, her own family most of all.
The main character is a naive, selfish, judgmental, piece of garbage that uses those around her for her needs and the rest of the time has a superiority persona attacking those same people with unworthy self righteous arrogance for who they are knowing full well who she is involved with and continues to be. She is filth, ignorant, with a massive ego and need for respect from others she does not deserve.
The FBI agent is an immoral individual, a borderline psychopath (a well written characterization of any law enforcement officer in America) he uses lies, bullying and threats to manipulate others, he has threatened to allow a child to die to get what he wants.