Let me tell you a little something about Iris. She was in love with a goddamn psychopath. The same psychopath she sold her sister out to, who kidnapped her and sexually assaulted her and all around fucked her up. So excuse me if I don't give a fuck what Iris was or wasn't real inclined to do.
As for your brother, he's a victim-blaming son of a bitch. He knew what Sam had been through. He knew she was fucked up, and for Christ's sake he told her he had a thing for his goddamn patient. Her sister. She invited him to a goddamn club-- that doesn't mean she consented to a fucking thing, you hear me? She didn't know where the hell she was or who she was when I got there, so you might want to watch your mouth when you go blaming her for coming onto him.
I'm not retracting my police report. But here's what I will do: I'll pretend your brother doesn't fucking exist so long as he leaves Sam alone. Sound good?